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Lens Substrate Component – Computer, Electronic and Optical Product Manufacturing

Component Specifications

Definition

A lens substrate is the core structural component of a focusing lens, typically made from high-purity optical materials with precisely engineered surfaces that serve as the foundation for optical coatings and final lens shaping. It determines the fundamental optical properties, mechanical stability, and thermal characteristics of the complete lens assembly.

Working Principle

The lens substrate functions as the primary optical medium that transmits and refracts light according to its geometric curvature and material refractive index. It provides the precise surface geometry required for focusing light beams, while maintaining dimensional stability under various environmental conditions to ensure consistent optical performance.

Materials

Optical glass (BK7, Fused Silica), Optical crystals (Calcium Fluoride, Zinc Selenide), Optical ceramics (Alumina, Silicon Carbide)

Technical Parameters

Surface Quality 40-20 Scratch-Dig
Refractive Index 1.45-2.4
Surface Flatness λ/4 @ 632.8 nm
Diameter Tolerance ±0.05 mm
Thickness Tolerance ±0.1 mm
Thermal Expansion Coefficient 0.5-10 × 10⁻⁶/K

Standards

ISO 10110, ISO 14997, DIN 3140, DIN 58927

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for Lens Substrate.

Parent Products

This component is used in the following industrial products

Focusing Lens

An optical component that converges or diverges light beams to achieve precise focus within an optical system.

View Product Details

Engineering Analysis

Risks & Mitigation

Surface contamination during handling
Thermal stress cracking
Sub-micron surface defects
Material inhomogeneity
Moisture absorption in hygroscopic materials

FMEA Triads

Trigger: Improper cleaning procedures
Failure: Surface contamination reduces optical transmission
Mitigation: Implement cleanroom handling protocols and regular surface inspection

Trigger: Thermal expansion mismatch with mounting hardware
Failure: Mechanical stress causes surface deformation
Mitigation: Use compatible materials and design thermal compensation mechanisms

Industrial Ecosystem

Compatible With

Interchangeable Parts

Compliance & Inspection

Tolerance

Surface accuracy within λ/10, dimensional tolerance ±0.02 mm

Test Method

Interferometry for surface measurement, spectrophotometry for material properties, coordinate measuring machines for dimensional verification

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 is the difference between a lens substrate and a finished lens?

A lens substrate is the raw optical component with precisely ground surfaces but without final polishing or anti-reflective coatings, while a finished lens has all optical treatments applied and is ready for installation.

Why is material purity important for lens substrates?

High material purity ensures consistent refractive index, minimal light scattering, and reduced absorption, which are critical for maintaining optical performance and minimizing energy loss in focusing systems.

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.

Lens Substrate