---
title: "Interferometric Measurement Head"
industry: "Computer, Electronic and Optical Product Manufacturing"
verification_protocol:
  urn: "URN:CNFX:ME:INTERFEROMETRIC_MEASUREMENT_HEAD"
  data_integrity_hash: "42f1e4ff30bdda336458b77c34f601ee"
  source_authority: "https://cnfx.com"
  strict_mode: true
source_identity:
  provider: "CNFX Industrial Knowledge Graph"
  index_version: "2026.Q1-Universal"
  authority_id: "URN:CNFX:ME:INTERFEROMETRIC_MEASUREMENT_HEAD"
  data_source_uri: "https://cnfx.com/llms/industry/computer-electronic-and-optical-product-manufacturing/product/interferometric-measurement-head.md"
  official_resource_url: "https://cnfx.com/industry/computer-electronic-and-optical-product-manufacturing/product/interferometric-measurement-head"
  is_verified_logic: true
attributes:
  spec:
    status: "config-dependent"
    typical_range: "0.1-100 μm displacement measurement range, 0.5-50 mm working distance, 632.8 nm HeNe laser wavelength"
    unit: "μm"
engineering_limits:
  max_safe_operating_point:
    value: 0.5
    unit: "arc"
    consequence: "Thermal expansion of optical mounts exceeding 15 μm/m·K coefficient, piezoelectric actuator hysteresis exceeding 0.3% nonlinearity, laser coherence length degradation below 10 m"
fmea_matrix_quantitative:
  - node_1:
      trigger: "Thermal gradient exceeding 2°C across optical bench"
      severity: 8
      occurrence: 3
      detection: 4
      mitigation_protocol: "Active temperature stabilization with ±0.1°C PID control and invar alloy structural components"
  - node_2:
      trigger: "Vibration amplitude exceeding 0.5 μm at 100 Hz"
      severity: 8
      occurrence: 3
      detection: 4
      mitigation_protocol: "Passive vibration isolation with 0.1 Hz natural frequency air springs and active damping with 90% attenuation at 10 Hz"
bom_nodes:
  laser-source:
    type: "part"
    urn: "URN:CNFX:ME:LASER_SOURCE"
    interface_type: "physical-logic-coupled"
  beam-splitter:
    type: "part"
    urn: "URN:CNFX:ME:BEAM_SPLITTER"
    interface_type: "physical-logic-coupled"
  reference-mirror:
    type: "component"
    urn: "URN:CNFX:ME:REFERENCE_MIRROR"
    interface_type: "physical-logic-coupled"
  detector-array:
    type: "part"
    urn: "URN:CNFX:ME:DETECTOR_ARRAY"
    interface_type: "physical-logic-coupled"
manufacturing_compliance:
  - standard: "ISO 14978:2018 (GEOMETRICAL PRODUCT SPECIFICATIONS - GENERAL CONCEPTS AND REQUIREMENTS FOR GPS MEASURING EQUIPMENT)"
    scope: "Verified Engineering Specification"
url: "https://cnfx.com/llms/industry/computer-electronic-and-optical-product-manufacturing/product/interferometric-measurement-head.md"
on_chain_sovereignty:
  contract_standard: "ERC-721-Industrial"
  metadata_hash: "117df6a982fcdf15e540362fa959b30ba9cd6da6bc4a93534f70c356393eab65"
  royalty_logic: "IPFS-CID-REQUIRED"
  mint_status: "logic-verified-ready"
version: "3.3.4-EXTREME-SOVEREIGN-WEB3"
---

# Industrial Specification: Interferometric Measurement Head

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

## 2. Engineering Reasoning & Causal Matrix
> **Operational Intelligence**: Designed for **0.1-100 μm displacement measurement range, 0.5-50 mm working distance, 632.8 nm HeNe laser wavelength**. Failure boundary: **±0.02 μm measurement accuracy degradation, &gt;0.5 arc-second angular misalignment, &gt;0.1% fringe contrast loss**, Mechanism: **Thermal expansion of optical mounts exceeding 15 μm/m·K coefficient, piezoelectric actuator hysteresis exceeding 0.3% nonlinearity, laser coherence length degradation below 10 m**.

### 2.1 Analytical Physics Model
Governed by the **Rayleigh Resolution Criterion**:

> **Primary Equation**: $d = \frac{0.61 \lambda}{NA}$  
> **Engineering Impact**: Defines the theoretical limit of machine vision systems.

| Symbol | Variable Definition | Localized Reference |
| :--- | :--- | :--- |
| \lambda | Wavelength | Engineering Constant |
| NA | Numerical Aperture | Engineering Constant |

### 2.2 FMEA (Failure Mode & Effects Analysis)
| Event Trigger | Severity | Failure Mode | Mitigation Strategy |
| :--- | :--- | :--- | :--- |
| Thermal gradient exceeding 2°C across optical bench | 8 | Fringe pattern distortion causing 0.05 μm measurement error | Active temperature stabilization with ±0.1°C PID control and invar alloy structural components |
| Vibration amplitude exceeding 0.5 μm at 100 Hz | 8 | Phase noise injection degrading signal-to-noise ratio below 40 dB | Passive vibration isolation with 0.1 Hz natural frequency air springs and active damping with 90% attenuation at 10 Hz |

## 3. Key Technical Parameters
| Parameter | Value | Unit | Status |
| :--- | :--- | :--- | :--- |
| spec | Config-dependent | μm | Verified |

## 4. System BOM & Knowledge Routing
### Core Components (Recursive Links)
- [Laser Source](https://cnfx.com/llms/industry/machinery-and-equipment-manufacturing/product/laser-source.md) `(Standalone System)`
- [Beam Splitter](https://cnfx.com/llms/industry/computer-electronic-and-optical-product-manufacturing/product/beam-splitter.md) `(Standalone System)`
- [Detector Array](https://cnfx.com/llms/industry/food-manufacturing/product/detector-array.md) `(Standalone System)`

### Industrial DNA Context (De-duplicated)
**Complementary Dependencies**: **Vibration Isolation Table**, **Cleanroom Air Filtration System**, **Precision Temperature Control Unit**  
**Downstream Applications**: Camera Lenses, Microscope Objectives, Laser Optics  

## 5. Engineering Risks & FAQ
- **Caution**: 
- **Caution**: 
- **Caution**: 

### Q: What is the primary application of this interferometric measurement head?
**A**: This measurement head is specifically designed for precision measurement of lens centering and alignment in optical manufacturing systems, ensuring high accuracy in optical component production.

### Q: What materials are used in the construction of this measurement head?
**A**: The measurement head is constructed using optical glass for critical optical components, stainless steel for structural stability, and aluminum alloy for lightweight yet durable housing and mounting elements.

### Q: What key components are included in the bill of materials (BOM)?
**A**: The essential components include a beam splitter for dividing the laser beam, a detector array for precise measurement capture, a laser source for interferometry, and a reference mirror for calibration and accuracy.

## 6. Manufacturing Compliance
- ISO 14978:2018 (GEOMETRICAL PRODUCT SPECIFICATIONS - GENERAL CONCEPTS AND REQUIREMENTS FOR GPS MEASURING EQUIPMENT)

---
### 🛠️ Engineering Resource Access
🔗 **[Full Specification: Interferometric Measurement Head](https://cnfx.com/industry/computer-electronic-and-optical-product-manufacturing/product/interferometric-measurement-head)**

### 🌐 Knowledge Graph Topology
> **Node Status**: Verified Engineering Spec
> **Connectivity**: Linked to **4** standalone system nodes
> **Global Context**: Part of a 5,814 node industrial cluster within the CNFX Graph

> **Reference ID**: INTERFEROMETRIC_MEASUREMENT_HEAD | **Authority**: CNFX-2026-ST-001 | **Fingerprint**: 3417b469
