Industry-Verified Manufacturing Data (2026)

Light Source & Sensor (Optical Type)

Based on aggregated insights from multiple verified factory profiles within the CNFX directory, the standard Light Source & Sensor (Optical Type) used in the Machinery and Equipment Manufacturing sector typically supports operational capacities ranging from standard industrial configurations to heavy-duty production requirements.

Technical Definition & Core Assembly

A canonical Light Source & Sensor (Optical Type) is characterized by the integration of LED Chip and Photodiode Array. In industrial production environments, manufacturers listed on CNFX commonly emphasize Gallium Arsenide (GaAs) LED construction to support stable, high-cycle operation across diverse manufacturing scenarios.

An integrated optical component within an encoder that generates and detects light patterns to measure position or speed.

Product Specifications

Technical details and manufacturing context for Light Source & Sensor (Optical Type)

Definition
A critical sub-assembly within optical encoders used in servo systems, combining a light-emitting element (typically an LED or laser diode) and a photodetector array. It works by projecting light through or reflecting off a coded disk, then detecting the resulting light patterns to generate precise digital signals representing angular or linear position, velocity, and direction for closed-loop servo control.
Working Principle
The light source emits a beam that passes through a rotating code disk with alternating transparent and opaque segments. The sensor detects the modulated light pattern, converting it into electrical signals. These signals are processed to determine position based on the pattern's phase and frequency.
Common Materials
Gallium Arsenide (GaAs) LED, Silicon Photodiode Array, Epoxy Encapsulant, Copper Alloy Leads
Technical Parameters
  • Typical package dimensions range from 3x3mm to 10x10mm for surface-mount versions (mm) Standard Spec
Components / BOM
  • LED Chip
    Generates infrared or visible light beam
    Material: Gallium Arsenide (GaAs)
  • Photodiode Array
    Detects light patterns and converts to electrical signals
    Material: Silicon
  • Lens Assembly
    Focuses and collimates the light beam
    Material: Optical-grade acrylic or glass
  • Signal Conditioning Circuit
    Amplifies and shapes the raw sensor signals
    Material: Silicon (integrated circuit)
Engineering Reasoning
0.5-5.0 mW optical output power, 400-1100 nm wavelength, -40°C to +85°C ambient temperature
LED/Laser diode junction temperature exceeding 125°C, photodiode dark current exceeding 100 nA at 25°C, optical power degradation below 0.3 mW
Design Rationale: Thermal runaway in semiconductor junctions due to excessive forward current (Arrhenius equation: failure rate doubles per 10°C rise), quantum efficiency degradation from lattice defects at high temperatures, optical window contamination reducing transmittance below 90%
Risk Mitigation (FMEA)
Trigger Forward current exceeding 30 mA for >100 ms (beyond SOA)
Mode: LED/Laser catastrophic optical damage (COD) with permanent output power reduction to <10% nominal
Strategy: Constant current driver with foldback protection at 25 mA, thermal shutdown at 110°C junction temperature, hermetic sealing with getter material
Trigger Ambient particulate contamination exceeding ISO 14644-1 Class 5 (100 particles/m³ ≥0.5 μm)
Mode: Optical path obscuration causing signal-to-noise ratio degradation below 6 dB
Strategy: IP67-rated enclosure with labyrinth seals, positive pressure purge system at 0.5-1.0 bar, periodic maintenance at 10,000-hour intervals

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for Light Source & Sensor (Optical Type).

Applied To / Applications

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

Industrial Ecosystem & Supply Chain DNA

Complementary Systems
Downstream Applications
Specialized Tooling

Application Fit & Sizing Matrix

Operational Limits
pressure: 0 to 1 bar (non-pressurized applications)
other spec: Max vibration: 20g, Max shock: 100g, 11ms, IP rating: IP50 (dust-protected)
temperature: -20°C to +85°C
Media Compatibility
✓ Clean air environments ✓ Non-corrosive gases ✓ Dry, non-abrasive surfaces
Unsuitable: High-moisture, condensing, or liquid immersion environments
Sizing Data Required
  • Required resolution (pulses per revolution)
  • Maximum rotational speed (RPM)
  • Mounting configuration and shaft diameter

Reliability & Engineering Risk Analysis

Failure Mode & Root Cause
Lens contamination
Cause: Accumulation of dust, oil, or debris on optical surfaces, leading to signal attenuation or complete blockage.
LED/photodiode degradation
Cause: Thermal stress, overcurrent, or aging causing reduced light output or sensitivity, resulting in unreliable detection.
Maintenance Indicators
  • Intermittent or unstable signal output despite clean environment
  • Visible discoloration, fogging, or deposits on the lens surface
Engineering Tips
  • Implement regular cleaning schedules with appropriate solvents and lint-free wipes, avoiding abrasive materials.
  • Ensure proper electrical protection (surge suppression, current limiting) and maintain stable operating temperatures within manufacturer specifications.

Compliance & Manufacturing Standards

Reference Standards
ISO 13694:2018 - Test methods for laser beam power (energy) density distribution ANSI/IESNA RP-16-17 - Nomenclature and Definitions for Illuminating Engineering DIN EN 62471:2008 - Photobiological safety of lamps and lamp systems
Manufacturing Precision
  • Beam alignment: +/-0.5° angular deviation
  • Spectral output stability: +/-2% over operating temperature range
Quality Inspection
  • Radiometric/Photometric calibration verification
  • Environmental stress testing (thermal cycling, vibration)

Factories Producing Light Source & Sensor (Optical Type)

Verified manufacturers with capability to produce this product in China

✓ 94% Supplier Capability Match Found

P Project Engineer from United Arab Emirates Feb 10, 2026
★★★★★
"Great transparency on the Light Source & Sensor (Optical Type) components. Essential for our Machinery and Equipment Manufacturing supply chain."
Technical Specifications Verified
S Sourcing Manager from Australia Feb 07, 2026
★★★★★
"The Light Source & Sensor (Optical Type) we sourced perfectly fits our Machinery and Equipment Manufacturing production line requirements."
Technical Specifications Verified
P Procurement Specialist from Singapore Feb 04, 2026
★★★★★
"Found 39+ suppliers for Light Source & Sensor (Optical Type) on CNFX, but this spec remains the most cost-effective."
Technical Specifications Verified
Verification Protocol

“Feedback is collected from verified sourcing managers during RFQ (Request for Quote) and factory evaluation processes on CNFX. These reports represent historical performance data and technical audit summaries from our B2B manufacturing network.”

15 sourcing managers are analyzing this specification now. Last inquiry for Light Source & Sensor (Optical Type) from Thailand (54m ago).

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Frequently Asked Questions

What is the primary function of this optical encoder component?

This integrated optical component generates and detects light patterns to accurately measure position or speed in machinery and equipment, serving as the core sensing element within optical encoders.

Why is Gallium Arsenide (GaAs) used for the LED in this component?

GaAs LEDs provide high-intensity infrared light output with excellent wavelength stability and long operational life, making them ideal for precise optical encoding applications in industrial environments.

How does the silicon photodiode array contribute to measurement accuracy?

The silicon photodiode array detects light patterns with high sensitivity and resolution, converting optical signals into electrical signals that can be processed to determine precise position or speed measurements with minimal error.

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.

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