Structured Manufacturing Data (2026)

Photodetector array

Based on aggregated insights from structured factory profiles within the CNFX directory, the standard Photodetector array 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 Photodetector array is characterized by the integration of Photodiode elements and Interconnection matrix. In industrial production environments, manufacturers listed on CNFX commonly emphasize Silicon construction to support stable, high-cycle operation across diverse manufacturing scenarios.

An array of photodetectors that converts optical signals into electrical signals for position or motion detection.

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Product Specifications

Technical details and manufacturing context for Photodetector array

Definition
A photodetector array is a critical component within an encoder system, consisting of multiple light-sensitive elements arranged in a pattern. It detects light patterns from an encoder disk or scale and converts them into electrical signals that are processed to determine precise position, speed, or direction of motion.
Working Principle
The photodetector array receives modulated light (typically from an LED or laser) that passes through or reflects off an encoder pattern. Each photodetector element generates an electrical current proportional to the incident light intensity. The array's spatial arrangement allows detection of phase-shifted signals (e.g., quadrature signals) for accurate position interpolation and direction sensing.
Common Materials
Silicon, Gallium arsenide (GaAs), Indium gallium arsenide (InGaAs)
Technical Parameters
  • Pixel pitch or element spacing within the array (mm) Customizable
Components / BOM
  • Photodiode elements Part
    Convert incident photons into electrical current through the photoelectric effect
    Material: Semiconductor materials (Si, GaAs, InGaAs)
  • Interconnection matrix
    Routes electrical signals from individual photodetectors to output terminals
    Material: Aluminum or copper metallization
  • Protective window Part
    Shields sensitive photodetector elements from environmental contaminants while transmitting light
    Material: Glass or optical-grade polymer

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for Photodetector array.

silicon photodetector array for motion detection GaAs photodetector array optical signal conversion InGaAs photodetector array industrial applications photodiode array with protective window high-sensitivity photodetector array for electronics ma

Applied To / Applications

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

Encoder
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Optical Alignment Sensor
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Active Feedback Sensor
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High-Resolution Encoder
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Reading Head
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Read Head/Sensor
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Receiver/Detector Module
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Optical Encoders
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EDM Transceiver
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Opto-isolator Array
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Industrial Ecosystem & Supply Chain Structure

Complementary Systems
Downstream Applications
Specialized Tooling

Application Fit & Sizing Matrix

Operational Limits
pressure: Atmospheric to 1.5 bar
other spec: Wavelength range: 400-1100 nm, Response time: <10 ns
temperature: -40°C to +85°C
Media Compatibility
✓ Clean air environments ✓ Optical glass interfaces ✓ Non-corrosive gas atmospheres
Unsuitable: High particulate or abrasive slurry environments
Sizing Data Required
  • Required spatial resolution (pixel pitch)
  • Signal wavelength range
  • Minimum detectable light intensity (NEP)

Reliability & Engineering Risk Analysis

Failure Mode & Root Cause
Pixel degradation
Cause: Thermal stress from prolonged operation or environmental temperature fluctuations causing material fatigue and reduced sensitivity.
Signal drift
Cause: Contamination accumulation on optical surfaces or aging of electronic components leading to calibration loss.
Maintenance Indicators
  • Inconsistent output readings or signal noise under stable lighting conditions
  • Visible particulate contamination or condensation on optical windows
Engineering Tips
  • Implement controlled thermal management with proper heat sinking and avoid rapid temperature cycling
  • Establish regular optical cleaning protocols using approved materials and maintain dust-free operating environment

Compliance & Manufacturing Standards

Reference Standards
ISO 9022-11:2015 (Optical components - Environmental test methods) ANSI/ESD S20.20-2021 (Electrostatic discharge control program) DIN EN 60747-5-2:2003 (Discrete semiconductor devices - Optoelectronic devices)
Manufacturing Precision
  • Pixel pitch uniformity: +/-0.5% across array
  • Spectral response deviation: +/-3nm from specified wavelength
Quality Inspection
  • Dark current uniformity test (measurement of leakage current across all pixels)
  • Quantum efficiency verification (spectral response measurement at specified wavelengths)

Factories Producing Photodetector array

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 are the main applications of photodetector arrays in computer and optical product manufacturing?

Photodetector arrays are essential for position sensing, motion detection, optical encoders, barcode scanners, and automated optical inspection systems in electronics manufacturing.

How does the choice of material (Si, GaAs, InGaAs) affect photodetector array performance?

Silicon offers cost-effective visible light detection, GaAs provides higher speed for near-infrared applications, while InGaAs delivers superior sensitivity for longer infrared wavelengths in specialized optical systems.

What maintenance considerations are important for photodetector arrays with protective windows?

Regular cleaning of protective windows is crucial to maintain optical clarity. Avoid abrasive materials, use appropriate optical cleaning solutions, and ensure proper environmental sealing to prevent dust and moisture ingress.

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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