Emitter Lens: Wavelength Range 400-1100 nm, Diameter 3-20 mm

Q: What is the primary function of an emitter lens in optical positioning sensors?

It collimates and directs light from the emitter to ensure accurate, consistent beam projection for reliable position or distance measurements.

Q: How does material choice affect emitter lens performance?

Glass offers superior optical clarity and thermal stability, while plastics provide cost savings and weight reduction, with trade-offs in durability and temperature resistance.

Component Specifications

Definition

An emitter lens is a specialized optical component integrated into optical positioning sensors, designed to precisely collimate, focus, and direct light emitted from a source (such as an LED or laser diode) toward a target or receiver. It ensures optimal light distribution, minimizes divergence, and enhances signal integrity for high-accuracy distance, displacement, or position measurements in industrial automation, robotics, and metrology applications.

Working Principle

The emitter lens operates on optical refraction principles, shaping and controlling light waves from the emitter. It collimates divergent light into a parallel or focused beam, reducing scattering and maintaining intensity over distance. This enables precise targeting and consistent signal transmission, critical for triangulation, time-of-flight, or interferometry-based positioning systems.

Materials

Typically made from optical-grade materials: borosilicate glass (e.g., BK7) for high transparency and thermal stability, or engineered plastics (e.g., PMMA, polycarbonate) for lightweight, cost-effective applications. Coatings may include anti-reflective (AR) layers to minimize losses and protective coatings for durability.

Technical Parameters

Parameter	Typical range	Notes & selection driver
Diameter	3-20 mm
Focal Length	5-50 mm
Surface Accuracy	λ/4 at 632.8 nm
Wavelength Range	400-1100 nm
Operating Temperature	-20°C to 80°C
Numerical Aperture (NA)	0.1-0.5
Transmission Efficiency	>90%

Ranges are indicative industry figures for RFQ preparation, not a supplier commitment. Confirm every value and standard with the legal manufacturer before ordering.

Standards

ISO 10110, ISO 12123, DIN 3140

Parent Products

This component is used in the following industrial products

Optical Positioning Sensor

A non-contact sensor that uses optical technology to detect and measure the precise position of objects within a machine's working area.

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Engineering Analysis

Risks & Mitigation

Misalignment causing measurement errors
Thermal expansion affecting focal properties
Surface contamination reducing transmission

FMEA Triads

Trigger: Improper installation or vibration
Failure: Lens misalignment leading to beam deviation
Mitigation: Use precision mounts and regular calibration checks

Trigger: Exposure to harsh chemicals or abrasives
Failure: Surface degradation or coating damage
Mitigation: Apply protective coatings and follow environmental specifications

Industrial Ecosystem

Compatible With

Optical positioning sensors, laser triangulation systems, automated guided vehicles (AGVs), robotic arms

Typical Suppliers & Equivalents

Edmund Optics, Thorlabs, Newport, Sill Optics, OptoSigma

Compliance & Inspection

Tolerance

±0.01 mm for critical dimensions, angular tolerance <0.1°

Test Method

Interferometry for surface accuracy, spectrophotometry for transmission, environmental testing per IEC 60068

Procurement Evaluation Criteria

A practical evidence checklist for RFQ preparation and supplier evaluation.

Technical documentation

Request current drawings, revision history, and a signed specification sheet.

Manufacturing capability

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Inspection readiness

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Supplier transparency

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Manufacturers of Emitter Lens

Manufacturer profiles associated with Emitter Lens.

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Compiled and source-reviewed by the CNFX editorial team. Each manufacturer above links to the page on that company's own website where the product is listed, with the date we checked it. How we source and review

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Frequently Asked Questions

What is the primary function of an emitter lens in optical positioning sensors?