INDUSTRY COMPONENT

Illumination Source

Illumination source for barcode readers providing consistent light for accurate scanning.

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Component Specifications

Definition
An illumination source in barcode readers is a critical optical component that emits controlled light onto barcode surfaces to create contrast between bars and spaces. It ensures consistent reflectance patterns that the reader's sensor can detect and decode into digital data. These sources are engineered for specific wavelengths, intensity stability, and durability in industrial environments.
Working Principle
The illumination source operates by emitting light (typically LED-based) at specific wavelengths (commonly 660nm red or 850nm infrared) onto barcode surfaces. The light reflects differently from dark bars (absorbing light) and light spaces (reflecting light), creating a contrast pattern. This reflected light is captured by the reader's sensor and converted into electrical signals for decoding. Advanced systems may use multiple wavelengths or structured lighting patterns to handle challenging surfaces.
Materials
LED chips (GaAs, GaAlAs, or InGaN semiconductors), aluminum or copper heat sinks, polycarbonate or glass lenses, epoxy encapsulation, gold bonding wires, ceramic substrates, and stainless steel housings.
Technical Parameters
  • IP Rating IP54 or higher
  • Beam Angle 15-60 degrees
  • Wavelength 660nm (red) or 850nm (IR)
  • Power Output 5-50 mW
  • Life Expectancy 50,000-100,000 hours
  • Operating Voltage 3.3V or 5V DC
  • Luminous Intensity 100-5000 mcd
  • Current Consumption 20-150 mA
  • Operating Temperature -20°C to +70°C
Standards
ISO/IEC 15416, ISO/IEC 15426-1, DIN 66399

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for Illumination Source.

barcode reader illumination industrial LED lighting scanning light source optical component automated identification Illumination Source Illumination Source in Computer, Electronic and Optical Product Manufacturing

Parent Products

This component is used in the following industrial products

Barcode Reader

An optical scanning device that reads printed barcodes and converts them into digital data for identification and tracking purposes.

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Engineering Analysis

Risks & Mitigation
  • LED degradation over time
  • Heat buildup affecting performance
  • Inconsistent illumination causing read errors
  • Wavelength mismatch with barcode material
  • Environmental contamination on lens surface
FMEA Triads
Trigger: Thermal stress from continuous operation
Failure: LED output degradation or complete failure
Mitigation: Implement proper heat sinking, use thermal management circuits, and follow duty cycle recommendations
Trigger: Voltage spikes or electrical overstress
Failure: Premature LED burnout or circuit damage
Mitigation: Include surge protection, voltage regulation, and current limiting in driver circuits
Trigger: Contamination accumulation on optical surfaces
Failure: Reduced light output and scanning reliability
Mitigation: Use sealed housings, implement regular cleaning protocols, and select appropriate IP ratings

Industrial Ecosystem

Compatible With

Interchangeable Parts

Compliance & Inspection

Tolerance
±5% wavelength stability, ±10% intensity variation across operating temperature range
Test Method
ISO/IEC 15426-1 for verification performance, ANSI/UL 60950-1 for electrical safety, IEC 62471 for photobiological safety

Procurement Evaluation Criteria

Not customer reviews or live demand data. These dimensions support RFQ preparation and supplier evaluation.

Technical documentation
4/5
Manufacturing capability
4/5
Inspection readiness
5/5
Supplier transparency
3/5

These scores are example evaluation dimensions, not real customer ratings, country-specific buyer feedback, or live inquiry activity.

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Frequently Asked Questions

Why do barcode readers need specific illumination sources?

Barcode readers require specific illumination sources to provide consistent, wavelength-optimized light that creates maximum contrast between barcode elements. Different materials and printing methods reflect light differently, so specialized sources ensure reliable scanning across various conditions.

What is the difference between red and infrared illumination sources?

Red illumination (660nm) works best with traditional printed barcodes on paper or labels, while infrared (850nm) is better for reading barcodes through protective coatings, on dark surfaces, or in environments with ambient red light interference. Some readers use both wavelengths for maximum versatility.

Can I contact factories directly?

Yes, each factory profile provides direct contact information.

Data Basis

CNFX manufacturer profiles, technical classification, publicly available product information, and ongoing plausibility checks.

Preliminary Technical Classification
This page supports structured research, RFQ preparation, and supplier evaluation. It does not replace buyer-led supplier qualification, standards review, or technical approval.

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