Industry-Verified Manufacturing Data (2026)

Lens Holding Fixture

Based on aggregated insights from multiple verified factory profiles within the CNFX directory, the standard Lens Holding Fixture 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 Lens Holding Fixture is characterized by the integration of Clamping Jaws / Collet and Fixture Body / Base. In industrial production environments, manufacturers listed on CNFX commonly emphasize Stainless Steel construction to support stable, high-cycle operation across diverse manufacturing scenarios.

A precision mechanical component designed to securely hold and position optical lenses during the polishing process.

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Product Specifications

Technical details and manufacturing context for Lens Holding Fixture

Definition
The Lens Holding Fixture is a critical component of the Precision Optical Lens Polishing Machine, responsible for securely clamping optical lenses in a fixed, precise orientation during polishing operations. It ensures consistent positioning and prevents movement or vibration that could compromise surface quality, directly contributing to achieving the required optical specifications and surface finish.
Working Principle
The fixture typically employs a mechanical clamping mechanism (e.g., vacuum chuck, mechanical jaws, or collet) to grip the lens periphery or non-optical surfaces. It interfaces with the machine's spindle or positioning stage, allowing the lens to be rotated and presented to the polishing tool with high repeatability and minimal runout.
Common Materials
Stainless Steel, Aluminum Alloy, Precision Ceramic
Technical Parameters
  • Maximum and minimum lens diameter the fixture can accommodate. (mm) Per Request
Components / BOM
  • Clamping Jaws / Collet
    Directly contacts and grips the lens edge.
    Material: Hardened Steel or Ceramic
  • Fixture Body / Base
    Provides structural support and mounting interface to the machine spindle.
    Material: Stainless Steel or Aluminum Alloy
  • Actuation Mechanism
    Mechanism (manual, pneumatic, or servo) to open/close the clamping jaws.
    Material: Steel, Aluminum
Engineering Reasoning
0.5-5.0 N·m clamping torque, 0.01-0.05 mm positional tolerance, 20-80°C temperature range
Clamping torque exceeds 8.0 N·m causing lens microfractures, positional deviation exceeds 0.1 mm causing polishing asymmetry, temperature exceeds 120°C causing thermal expansion mismatch
Design Rationale: Yield strength of aluminum 6061-T6 (276 MPa) exceeded at 8.0 N·m torque, thermal expansion coefficient mismatch (23.6 μm/m·°C for aluminum vs 8.6 μm/m·°C for optical glass) causing stress concentrations
Risk Mitigation (FMEA)
Trigger Torque calibration drift exceeding ±0.2 N·m from setpoint
Mode: Uneven lens pressure distribution causing asymmetric material removal
Strategy: Integrated piezoelectric torque sensors with 0.01 N·m resolution and closed-loop feedback control
Trigger Thermal gradient of 15°C/mm across fixture body
Mode: Differential expansion causing lens misalignment exceeding 0.05 mm
Strategy: Active thermal management with Peltier elements maintaining ±0.5°C uniformity

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for Lens Holding Fixture.

precision lens holding fixture for optical polishing stainless steel lens clamping fixture optical lens polishing fixture with collet aluminum alloy lens positioning fixture ceramic lens holding mechanism for manufacturing

Industrial Ecosystem & Supply Chain DNA

Complementary Systems
Downstream Applications
Specialized Tooling

Application Fit & Sizing Matrix

Operational Limits
pressure: Max 0.5 MPa clamping pressure, 0.1-0.3 MPa recommended
other spec: Slurry concentration: ≤40% solids by weight, pH 6-9, particle size ≤50μm
temperature: 15-35°C (operational), -10 to 60°C (storage)
Media Compatibility
✓ Cerium oxide polishing slurry ✓ Silica-based colloidal suspensions ✓ Diamond compound in water-soluble carrier
Unsuitable: Hydrofluoric acid-based etching solutions
Sizing Data Required
  • Lens diameter and edge thickness
  • Required positional accuracy (±μm)
  • Polishing machine mounting interface type

Reliability & Engineering Risk Analysis

Failure Mode & Root Cause
Clamping Force Degradation
Cause: Wear or fatigue in the clamping mechanism components (e.g., springs, actuators, or contact surfaces) due to repeated cycling, leading to insufficient holding force and potential lens slippage or misalignment.
Surface Contamination or Damage
Cause: Accumulation of particulate matter, oils, or debris on the fixture's contact surfaces, or physical damage (scratches, dents) from improper handling or tool contact, compromising lens positioning and causing optical defects.
Maintenance Indicators
  • Visible lens misalignment or movement during operation, indicating loss of clamping precision
  • Audible clicking, grinding, or unusual noises from the fixture mechanism during engagement or disengagement
Engineering Tips
  • Implement regular torque or force calibration checks on clamping elements using calibrated tools to ensure consistent holding pressure within specified tolerances
  • Establish a strict cleaning protocol using non-abrasive, lint-free materials and approved solvents to maintain pristine contact surfaces, coupled with protective covers when not in use

Compliance & Manufacturing Standards

Reference Standards
ISO 10110-7:2016 (Optics and photonics - Preparation of drawings for optical elements and systems - Part 7: Surface imperfection tolerances) ANSI/ASME B46.1-2019 (Surface Texture, Surface Roughness, Waviness, and Lay) DIN 3140-7:2017 (Dimensioning and tolerancing of optical components - Part 7: Mounting of optical components)
Manufacturing Precision
  • Bore diameter: +/-0.01mm for precision lens alignment
  • Flatness of mounting surface: 0.05mm per 100mm to prevent optical distortion
Quality Inspection
  • Coordinate Measuring Machine (CMM) verification of critical dimensions and geometric tolerances
  • Surface roughness measurement using profilometer to ensure Ra ≤ 0.8μm for proper lens contact

Factories Producing Lens Holding Fixture

Verified manufacturers with capability to produce this product in China

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✓ 93% Supplier Capability Match Found

P Procurement Specialist from Germany Jan 31, 2026
★★★★★
"Testing the Lens Holding Fixture now; the technical reliability results are within 1% of the laboratory datasheet."
Technical Specifications Verified
T Technical Director from Brazil Jan 28, 2026
★★★★★
"Impressive build quality. Especially the technical reliability is very stable during long-term operation."
Technical Specifications Verified
P Project Engineer from Canada Jan 25, 2026
★★★★★
"As a professional in the Computer, Electronic and Optical Product Manufacturing sector, I confirm this Lens Holding Fixture meets all ISO standards."
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.”

7 sourcing managers are analyzing this specification now. Last inquiry for Lens Holding Fixture from Thailand (19m ago).

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Frequently Asked Questions

What materials are available for the lens holding fixture?

Our lens holding fixtures are available in stainless steel for durability, aluminum alloy for lightweight applications, and precision ceramic for superior chemical resistance and thermal stability in demanding optical manufacturing environments.

How does the fixture secure lenses during polishing?

The fixture uses a precision actuation mechanism that operates clamping jaws or a collet system to securely hold optical lenses without causing damage or distortion, ensuring consistent positioning throughout the polishing process.

What components make up the lens holding fixture BOM?

The bill of materials includes three main components: the actuation mechanism for precise control, clamping jaws or collet for secure lens holding, and the fixture body/base that provides structural stability and mounting capability.

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 Specifications verified by CNFX Industrial Index (v2.6.03) for Computer, Electronic and Optical Product Manufacturing sector.

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