Structured Manufacturing Data (2026)

Lens Holding Fixture

Based on aggregated insights from structured 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 Part
Directly contacts and grips the lens edge.

Material: Hardened Steel or Ceramic
Fixture Body / Base Part
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

Industry Taxonomies & Aliases

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

Industrial Ecosystem & Supply Chain Structure

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

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.

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.

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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 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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