Structured Manufacturing Data (2026)

Focusing Lens

Based on aggregated insights from structured factory profiles within the CNFX directory, the standard Focusing Lens 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 Focusing Lens is characterized by the integration of Lens Substrate and Anti-Reflective Coating. In industrial production environments, manufacturers listed on CNFX commonly emphasize Optical Glass (e.g., BK7, Fused Silica) construction to support stable, high-cycle operation across diverse manufacturing scenarios.

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

Product Specifications

Technical details and manufacturing context for Focusing Lens

Definition
A focusing lens is a critical optical element within a Focusing Lens Assembly that manipulates the path of light rays to converge them at a specific focal point or diverge them as required by the optical system's design. It plays a fundamental role in determining the resolution, clarity, and precision of the focused spot or image.
Working Principle
Operates based on the principles of refraction. As light passes through the lens material (typically with a curved surface), its speed changes, causing the light rays to bend. A convex lens converges parallel rays to a focal point, while a concave lens diverges them. The specific curvature, material refractive index, and lens design dictate the focal length and focusing properties.
Common Materials
Optical Glass (e.g., BK7, Fused Silica), Optical Crystal (e.g., CaF2, ZnSe), Optical Plastic (e.g., PMMA, Polycarbonate)
Technical Parameters
  • Focal Length - The distance from the lens center to the focal point, determining the convergence power. (mm) Per Request
Components / BOM
  • Lens Substrate Part
    The bulk optical material that provides the refractive properties.
    Material: Optical Glass/Crystal/Plastic
  • Anti-Reflective Coating Part
    Thin film layers applied to lens surfaces to minimize reflection losses and increase light transmission.
    Material: Dielectric materials (e.g., MgF2, TiO2, SiO2)
  • Bevel/Edge Part
    The ground edge of the lens for safe handling and mounting within a holder or assembly.
    Material: Same as substrate or protective coating

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for Focusing Lens.

Applied To / Applications

This component is essential for the following industrial systems and equipment:

Industrial Ecosystem & Supply Chain Structure

Complementary Systems
Downstream Applications
Specialized Tooling

Application Fit & Sizing Matrix

Operational Limits
pressure: Atmospheric to 1 atm
other spec: Wavelength range: 200-2000 nm, Surface quality: 40-20 scratch-dig
temperature: -40°C to 150°C
Media Compatibility
✓ Laser beams in clean air ✓ Visible light in vacuum systems ✓ UV light in inert gas environments
Unsuitable: Abrasive slurry or particulate-laden flows
Sizing Data Required
  • Focal length requirement (mm)
  • Beam diameter input (mm)
  • Wavelength of light (nm)

Reliability & Engineering Risk Analysis

Failure Mode & Root Cause
Thermal stress cracking
Cause: Rapid temperature fluctuations causing differential expansion between lens material and housing, leading to microfractures and optical distortion.
Surface contamination/degradation
Cause: Accumulation of particulate matter, chemical deposits, or UV-induced polymer breakdown on optical surfaces, reducing transmission efficiency and causing focal point drift.
Maintenance Indicators
  • Visible haze, discoloration, or cloudiness on lens surfaces during routine visual inspection
  • Audible high-frequency vibration or rattling from lens assembly during operation, indicating mounting instability
Engineering Tips
  • Implement controlled thermal cycling during startup/shutdown procedures and maintain stable environmental conditions to minimize thermal shock
  • Establish regular precision cleaning protocols using lens-specific solutions and soft applicators, combined with protective coatings where applicable

Compliance & Manufacturing Standards

Reference Standards
ISO 10110: Optical elements and systems ANSI Z80.3: Nonprescription sunglasses and fashion eyewear CE marking for optical safety and electromagnetic compatibility
Manufacturing Precision
  • Surface accuracy: λ/4 at 632.8 nm
  • Centration: +/- 0.05 mm
Quality Inspection
  • Interferometric surface testing
  • Transmittance and reflectance spectrophotometry

Factories Producing Focusing Lens

Manufacturer profiles with relevant production capability in China

Manufacturer listings support early research and capability understanding. They are not certification, ranking, or transaction guarantees.

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 best for focusing lenses in high-temperature applications?

Fused silica and calcium fluoride (CaF2) crystals are ideal for high-temperature environments due to their low thermal expansion and high thermal shock resistance, maintaining optical precision under extreme conditions.

How does anti-reflective coating improve focusing lens performance?

Anti-reflective coatings minimize light loss through reflection, increasing transmission efficiency by up to 99.5% per surface. This enhances image clarity, reduces ghost images, and improves overall system energy efficiency in optical assemblies.

What are the key considerations when selecting a focusing lens for electronic manufacturing equipment?

Consider wavelength compatibility, numerical aperture for light gathering, surface accuracy (typically λ/10 or better), environmental durability, and coating specifications to ensure optimal performance in precision alignment, inspection, or laser processing applications.

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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