Structured Manufacturing Data (2026)

Autofocus actuator

Based on aggregated insights from structured factory profiles within the CNFX directory, the standard Autofocus actuator 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 Autofocus actuator is characterized by the integration of Voice Coil and Permanent Magnet. In industrial production environments, manufacturers listed on CNFX commonly emphasize Neodymium magnets construction to support stable, high-cycle operation across diverse manufacturing scenarios.

A precision electromechanical component that adjusts the position of camera lens elements to achieve optimal focus.

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Product Specifications

Technical details and manufacturing context for Autofocus actuator

Definition
An autofocus actuator is a critical component within the main camera module responsible for precisely moving lens elements to achieve sharp focus on subjects. It receives signals from the camera's autofocus system and translates them into mechanical movement, enabling rapid and accurate focusing in various photographic conditions.
Working Principle
The actuator typically uses piezoelectric, voice coil motor (VCM), or stepper motor technology to convert electrical signals into precise linear or rotational motion. When the camera's autofocus system detects defocus, it sends control signals to the actuator, which moves the lens elements to the optimal position for sharp focus.
Common Materials
Neodymium magnets, Copper coils, Piezoelectric ceramics, Stainless steel housing
Technical Parameters
  • Stroke length - the maximum distance the actuator can move the lens elements (mm) Customizable
Components / BOM
  • Voice Coil Part
    Converts electrical signals into magnetic force for movement
    Material: Copper wire
  • Permanent Magnet Part
    Provides constant magnetic field for coil interaction
    Material: Neodymium alloy
  • Moving Frame Part
    Holds lens elements and moves along guide rails
    Material: Stainless steel
  • Position Sensor
    Detects and reports the current position of the actuator
    Material: Hall effect sensor
  • Guide Rails Part
    Provides smooth linear motion path with minimal friction
    Material: Stainless steel

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for Autofocus actuator.

AF actuator Focus motor high precision autofocus actuator for cameras industrial camera lens focusing component piezoelectric autofocus actuator BOM voice coil motor autofocus assembly optical manufacturing autofocus mechanism

Applied To / Applications

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

Main camera module
View system integration details

Industrial Ecosystem & Supply Chain Structure

Complementary Systems
Downstream Applications
Specialized Tooling

Application Fit & Sizing Matrix

Operational Limits
pressure: Atmospheric (non-pressurized)
other spec: Humidity: 10-90% RH non-condensing, Vibration: ≤2G, Shock: ≤10G
temperature: -20°C to +85°C
Media Compatibility
✓ Clean air environments ✓ Dry inert gases ✓ Vacuum conditions
Unsuitable: Liquid immersion or high particulate environments
Sizing Data Required
  • Lens weight and inertia
  • Required focus travel distance
  • Response time and positioning accuracy

Reliability & Engineering Risk Analysis

Failure Mode & Root Cause
Motor winding insulation breakdown
Cause: Thermal cycling and moisture ingress leading to insulation degradation and short circuits
Gear train wear and backlash
Cause: Inadequate lubrication and particulate contamination causing accelerated mechanical wear
Maintenance Indicators
  • Erratic or jerky movement during focus adjustment
  • Unusual humming or grinding noises during operation
Engineering Tips
  • Implement regular preventive maintenance with vibration analysis to detect early mechanical wear
  • Maintain proper environmental controls (temperature, humidity, cleanliness) to prevent contamination and thermal stress

Compliance & Manufacturing Standards

Reference Standards
ISO 9001:2015 - Quality Management Systems IEC 60068-2-6:2007 - Environmental Testing - Vibration CE Marking - EU Compliance for Electromechanical Devices
Manufacturing Precision
  • Shaft Runout: +/-0.005mm
  • Position Repeatability: +/-0.01mm
Quality Inspection
  • Laser Interferometry for Positioning Accuracy
  • Environmental Stress Screening (ESS) for Reliability

Factories Producing Autofocus actuator

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 materials are used in this autofocus actuator?

This actuator utilizes neodymium magnets for strong magnetic fields, copper coils for efficient electrical conduction, piezoelectric ceramics for precise movement, and stainless steel housing for durability.

What are the key components in the bill of materials?

The BOM includes a voice coil for electromagnetic actuation, permanent magnets, a moving frame for lens mounting, a position sensor for feedback, and guide rails for smooth linear motion.

How does this actuator benefit computer and optical product manufacturing?

It provides precise, rapid lens focusing essential for high-quality imaging in cameras, medical devices, industrial inspection systems, and other optical products requiring reliable autofocus capabilities.

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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