INDUSTRY COMPONENT

Reference Mirror

A high-precision optical reference surface used in interferometric measurement systems for calibration and accuracy verification.

View Specifications

Component Specifications

Definition
A reference mirror is a critical optical component in interferometric measurement heads, providing a stable, highly reflective reference surface against which test surfaces are compared. It serves as the baseline for measuring flatness, surface roughness, and dimensional accuracy with nanometer-level precision in industrial metrology applications.
Working Principle
The reference mirror reflects a coherent light beam (typically laser) to create interference patterns when combined with light reflected from the test surface. By analyzing these interference fringes, the system calculates precise deviations in the test surface relative to the reference mirror's known optical flatness.
Materials
Fused silica or Zerodur glass with dielectric coating (e.g., aluminum or silver with protective layer), surface flatness: λ/20 to λ/100, surface roughness: <1 nm Ra
Technical Parameters
  • Diameter 25-150 mm
  • Mounting Kinematic or flexure mount
  • Coating Type Dielectric multilayer
  • Reflectivity >95% at operating wavelength
  • Surface Flatness λ/20 to λ/100
  • Surface Roughness <1 nm Ra
  • Operating Wavelength 632.8 nm (HeNe laser) or 532 nm
  • Thermal Expansion Coefficient <0.5×10⁻⁶/K
Standards
ISO 10110, ISO 14999, DIN 3140

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for Reference Mirror.

reference mirror interferometer mirror optical flat calibration mirror metrology component precision optics surface measurement Reference Mirror in Computer, Electronic and Optical Product Manufacturing

Parent Products

This component is used in the following industrial products

Interferometric Measurement Head

A precision optical component that uses interferometry to measure lens centering and alignment in optical manufacturing systems.

View Product Details

Interferometric Optical Head

A precision optical component that generates and analyzes interference patterns for non-contact surface measurement.

View Product Details

Engineering Analysis

Risks & Mitigation
  • Surface contamination affecting measurements
  • Thermal drift causing calibration errors
  • Mechanical damage to optical surface
  • Coating degradation over time
FMEA Triads
Trigger: Improper cleaning procedures
Failure: Surface scratches or contamination
Mitigation: Use approved cleaning materials and procedures, implement handling protocols
Trigger: Thermal expansion mismatch
Failure: Measurement drift during operation
Mitigation: Use low-expansion materials, implement temperature stabilization
Trigger: Vibration during measurement
Failure: Unstable interference patterns
Mitigation: Install on vibration-isolated platforms, use rigid mounting

Industrial Ecosystem

Compatible With

Interchangeable Parts

Compliance & Inspection

Tolerance
Surface flatness within λ/20, parallelism <5 arcseconds, diameter tolerance ±0.1 mm
Test Method
Interferometric testing against master reference, surface profilometry, reflectivity measurement

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.

Related Components

Main Processor
Central processing unit for industrial IoT gateways enabling real-time data processing and communication in manufacturing environments.
Memory Module
Memory module for Industrial IoT Gateway data storage and processing
Storage Module
Industrial-grade storage module for data logging and firmware in IoT gateways
Ethernet Controller
Industrial Ethernet controller for real-time data transmission in Industrial IoT Gateways.

Frequently Asked Questions

What is the difference between a reference mirror and a test mirror in interferometry?

The reference mirror provides a known, stable optical reference surface, while the test mirror is the component being measured. The system compares light reflected from both surfaces to detect deviations.

How often should reference mirrors be calibrated?

Reference mirrors should be calibrated annually or according to manufacturer specifications, with more frequent checks in high-precision applications or after mechanical shock.

Can reference mirrors be used with different wavelength lasers?

Reference mirrors are optimized for specific wavelengths. Using them outside designed wavelengths reduces accuracy due to coating performance variations.

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.

Request Manufacturing Insight for Reference Mirror

Reference Memory Chip Reference Network