INDUSTRY COMPONENT

Emitter Lens

Precision optical lens that collimates and directs light from an emitter in optical positioning sensors for accurate measurement.

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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
  • 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%
Standards
ISO 10110, ISO 12123, DIN 3140

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for Emitter Lens.

emitter lens optical positioning sensor collimating lens industrial optics sensor components precision measurement automation optics Emitter Lens in Computer, Electronic and Optical Product Manufacturing

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

Interchangeable Parts

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

Buyer Feedback

★★★★☆ 4.8 / 5.0 (18 reviews)

"Found 34+ suppliers for Emitter Lens on CNFX, but this spec remains the most cost-effective."

"The technical documentation for this Emitter Lens is very thorough, especially regarding technical reliability."

"Reliable performance in harsh Computer, Electronic and Optical Product Manufacturing environments. No issues with the Emitter Lens so far."

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Frequently Asked Questions

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.

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.

Can I contact factories directly?

Yes, each factory profile provides direct contact information.

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