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Lens/Collimator Component – Computer, Electronic and Optical Product Manufacturing

Q: What is the difference between a lens and a collimator in laser diode applications?

A simple lens focuses or diverges light, while a collimator is specifically designed to produce a parallel beam from a point source. In laser diode systems, collimators often incorporate multiple lens elements to correct asymmetries in the diode's output beam.

Q: How do I select the right Lens/Collimator for my laser diode?

Key selection parameters include: matching numerical aperture to diode emission angle, wavelength compatibility, required beam diameter, power handling capacity, and mechanical mounting compatibility. Always consult the diode's datasheet and consider thermal effects in high-power applications.

Q: Can Lens/Collimators be used with different wavelength laser diodes?

Most are optimized for specific wavelength ranges due to anti-reflection coatings and material dispersion characteristics. Using outside specified ranges reduces efficiency and may cause damage. Broadband AR coatings are available for multi-wavelength applications.

Component Specifications

Definition

A Lens/Collimator is a critical optical component in laser diode systems that transforms the divergent or elliptical output beam from a laser diode into a collimated (parallel) beam with minimal divergence. It typically consists of one or more precision lenses (aspheric, cylindrical, or spherical) mounted in a housing with precise alignment mechanisms. This component ensures optimal beam quality, directionality, and energy distribution for applications requiring controlled laser propagation over distance.

Working Principle

The Lens/Collimator operates on optical refraction principles. It captures the diverging light emitted from the laser diode's active region and redirects it through precisely curved lens surfaces. Aspheric lenses are commonly used to correct spherical aberrations and achieve high collimation efficiency. The collimator's focal length and numerical aperture are matched to the laser diode's emission characteristics to produce a beam with minimal divergence (typically <1 mrad) and uniform intensity profile.

Materials

Optical glass (BK7, Fused Silica), Synthetic sapphire, Zinc selenide (ZnSe) for high-power IR applications; Aluminum or stainless steel housing with black anodized or passivated surfaces; Epoxy-free mounting for thermal stability.

Technical Parameters

Transmission >98% @ specified wavelength
Beam Diameter 1-10 mm
Power Handling Up to 5W CW (depending on coating)
Mounting Thread M9×0.5, SM1, or custom
Wavefront Error <λ/4 @ 632.8 nm
Divergence Angle <1 mrad
Wavelength Range 405-1550 nm (visible to NIR)
Working Distance 5-50 mm
Numerical Aperture 0.1-0.6
Operating Temperature -10°C to +70°C

Standards

ISO 10110, ISO 11145, DIN 3140, DIN 58185

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for Lens/Collimator.

Parent Products

This component is used in the following industrial products

Laser Diode

A semiconductor device that emits coherent light through stimulated emission, used as the light source in particulate matter sensors.

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Engineering Analysis

Risks & Mitigation

Thermal lensing under high power
Misalignment causing beam walk-off
Coating damage from UV exposure
Mechanical stress from improper mounting
Contamination reducing transmission

FMEA Triads

Trigger: Thermal expansion mismatch between lens and housing
Failure: Beam drift and focus shift
Mitigation: Use matched CTE materials, incorporate thermal compensation design, implement active cooling for high-power units

Trigger: Vibration during operation or transport
Failure: Lens misalignment and beam quality degradation
Mitigation: Secure mounting with locking mechanisms, use vibration-damping materials, perform alignment verification after installation

Trigger: Environmental contamination (dust, moisture)
Failure: Reduced transmission and potential lens damage
Mitigation: Sealed housing designs, regular maintenance cleaning protocols, controlled environment operation

Industrial Ecosystem

Compatible With

Interchangeable Parts

Compliance & Inspection

Tolerance

Beam pointing stability: <0.1 mrad/°C; Centration: <0.05 mm; Surface quality: 40-20 scratch-dig

Test Method

Beam profiler analysis, interferometric wavefront measurement, photodiode power monitoring, environmental cycling tests per MIL-STD-810

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 and a collimator in laser diode applications?

A simple lens focuses or diverges light, while a collimator is specifically designed to produce a parallel beam from a point source. In laser diode systems, collimators often incorporate multiple lens elements to correct asymmetries in the diode's output beam.

How do I select the right Lens/Collimator for my laser diode?

Key selection parameters include: matching numerical aperture to diode emission angle, wavelength compatibility, required beam diameter, power handling capacity, and mechanical mounting compatibility. Always consult the diode's datasheet and consider thermal effects in high-power applications.

Can Lens/Collimators be used with different wavelength laser diodes?

Most are optimized for specific wavelength ranges due to anti-reflection coatings and material dispersion characteristics. Using outside specified ranges reduces efficiency and may cause damage. Broadband AR coatings are available for multi-wavelength applications.

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/Collimator