Structured Manufacturing Data (2026)

Light Source / Magnetic Field Generator

Based on aggregated insights from structured factory profiles within the CNFX directory, the standard Light Source / Magnetic Field Generator used in the Computer, Electronic and Optical Product Manufacturing sector typically supports operational capacities ranging from standard industrial configurations to heavy-duty production requirements.

Technical Definition & Core Assembly

A canonical Light Source / Magnetic Field Generator is characterized by the integration of Emitter Chip and Magnetic Core. In industrial production environments, manufacturers listed on CNFX commonly emphasize Semiconductor materials (GaAs, GaN) construction to support stable, high-cycle operation across diverse manufacturing scenarios.

A dual-function component in encoders that provides either optical illumination for optical encoders or generates magnetic fields for magnetic encoders.

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Product Specifications

Technical details and manufacturing context for Light Source / Magnetic Field Generator

Definition
This component serves as the signal generation source within encoder systems. In optical encoders, it functions as a light source (typically LED or laser) that illuminates the code disc. In magnetic encoders, it generates a magnetic field that interacts with magnetic patterns on the encoder wheel. The specific function depends on the encoder type, but both serve to create detectable signals for position or speed measurement.
Working Principle
For optical function: Emits coherent or incoherent light through semiconductor junctions (LEDs) or stimulated emission (lasers). For magnetic function: Uses permanent magnets or electromagnetic coils to generate stable magnetic fields. The generated light or magnetic field interacts with encoder patterns to create modulated signals detected by sensors.
Common Materials
Semiconductor materials (GaAs, GaN), Ferromagnetic materials, Copper windings, Optical glass/plastic
Technical Parameters
  • Wavelength for optical sources (typically 650-850nm for LEDs, 635-780nm for lasers) or magnetic field strength for magnetic generators (typically 10-100mT) (nm / mT) Per Request
Components / BOM
  • Emitter Chip Part
    Generates light through semiconductor junctions
    Material: GaAs/GaN semiconductor
  • Magnetic Core Part
    Concentrates and directs magnetic flux
    Material: Ferrite or rare-earth magnet
  • Lens/Optical Window Part
    Focuses or collimates emitted light
    Material: Optical glass or plastic

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for Light Source / Magnetic Field Generator.

optical encoder light source component magnetic encoder field generator dual-function encoder illumination system GaAs semiconductor encoder emitter ferromagnetic core encoder component

Applied To / Applications

This component is essential for the following industrial systems and equipment:

Encoders
View system integration details

Industrial Ecosystem & Supply Chain Structure

Complementary Systems
Downstream Applications
Specialized Tooling

Application Fit & Sizing Matrix

Operational Limits
pressure: 0 to 1 atm (non-pressurized)
other spec: Max magnetic field strength: 100 mT, Optical wavelength: 650-850 nm
temperature: -40°C to +85°C
Media Compatibility
✓ Clean air environments ✓ Non-corrosive industrial gases ✓ Dry inert atmospheres
Unsuitable: High moisture or condensing environments
Sizing Data Required
  • Encoder resolution requirement
  • Operating distance from sensing element
  • Required signal frequency/update rate

Reliability & Engineering Risk Analysis

Failure Mode & Root Cause
Magnetic field degradation
Cause: Coil insulation breakdown due to thermal cycling or moisture ingress, leading to reduced magnetic flux density and unstable field generation
Light source intensity decay
Cause: Electrode erosion or phosphor degradation in discharge lamps, or LED junction overheating, resulting in diminished luminous output and spectral shift
Maintenance Indicators
  • Audible arcing or buzzing from the magnetic coil housing, indicating insulation failure or loose connections
  • Visible flickering, color temperature shift, or dark spots in the emitted light pattern, signaling imminent source failure
Engineering Tips
  • Implement active cooling with temperature monitoring for both magnetic coils and light sources to prevent thermal degradation
  • Use vibration-isolated mounting and surge protection to minimize mechanical stress and electrical transients on sensitive components

Compliance & Manufacturing Standards

Reference Standards
ISO 12100:2010 - Safety of machinery IEC 61010-1:2010 - Safety requirements for electrical equipment CE Marking - EU conformity for health, safety, and environmental protection
Manufacturing Precision
  • Magnetic field strength: +/-5% of nominal value
  • Light output intensity: +/-10% of specified lumens
Quality Inspection
  • Electromagnetic compatibility (EMC) testing
  • Photometric performance verification

Factories Producing Light Source / Magnetic Field Generator

Manufacturer profiles with relevant production capability in China

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Manufacturer listings support early research and capability understanding. They are not certification, ranking, or transaction guarantees.

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

What is the primary function of this dual-component encoder part?

This component serves two functions: providing optical illumination for optical encoders using semiconductor emitter chips, or generating magnetic fields for magnetic encoders through ferromagnetic cores with copper windings.

Which materials are used in the optical function of this encoder component?

For optical illumination, it uses semiconductor materials like GaAs or GaN for the emitter chip, along with optical glass or plastic for the lens/window to direct and focus light in optical encoders.

How does this component switch between optical and magnetic encoder applications?

The component is designed with interchangeable BOM elements - using the emitter chip and lens for optical encoders, or the magnetic core with copper windings for magnetic encoders, allowing manufacturers to select the appropriate configuration for their encoder type.

Can I contact factories directly on CNFX?

CNFX is an open directory, not a transaction platform. Each factory profile provides direct contact information and production details to help you initiate direct inquiries with Chinese suppliers.

Data basis: CNFX manufacturer profiles, technical classification, publicly available product information, and ongoing plausibility checks for Computer, Electronic and Optical Product Manufacturing.

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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