Optical Lens System for Laser Measurement Scanners

Product Specifications

Technical details and manufacturing context for Optical Lens System

Definition

The Optical Lens System is an integrated component within a Laser Measurement Scanner. It precisely manipulates laser light to enable accurate distance, dimension, and surface profile measurements. The system typically consists of multiple lens elements arranged to control beam divergence, focal length, and spot size. It is designed for use in computer, electronic, and optical product manufacturing, serving as a critical part in measurement equipment.

Key specifications include a focal length range of 10–500 mm, clear aperture of 5–100 mm, and wavelength range of 190–2000 nm. Surface figure (PV) is specified as λ/10–λ/2 at 633 nm, and surface roughness (Ra) ranges from 0.5–10 nm. Transmittance is 90–99.9%, damage threshold is 5–50 J/cm², and operating temperature ranges from -40 to +80 °C. Humidity tolerance is 5–95% RH, ingress protection is IP54–IP65, and weight ranges from 0.05–2.0 kg. Materials include optical glass, plastic polymers, and anti-reflective coatings, with typical substrate options such as N-BK7, UVFS, and CaF2.

These parameters are reference ranges and must be verified for the specific model and application. Standards must be matched to the exact specification and test purpose. ISO 10110 concerns optical drawings, ISO 9211 optical coatings, and the ISO 21254 series provides current laser-induced-damage test principles and methods; the earlier ISO 11254 series is withdrawn. MIL-STD-810 provides an environmental-tailoring and laboratory-test framework rather than a product operating range. IEC 60068-2-78 defines a steady-state damp-heat test method, while IEC 60529 classifies protection provided by an enclosure. These references do not prove the listed ranges, an enclosure rating or compliance of a specific lens assembly. Always confirm model-specific values and standards with the legal manufacturer or supplier.

Working Principle

The system operates by refracting and focusing laser light through precisely shaped glass or plastic lens elements. Different lens configurations—converging, diverging, or compound—are used to achieve specific beam characteristics required for the scanner's measurement accuracy and range. The lenses are coated with anti-reflective layers to minimize reflection losses and enhance transmittance. The working principle relies on controlling beam divergence, focal length, and spot size to ensure precise measurement. The system must maintain optical quality within specified tolerances for surface figure and roughness to avoid wavefront distortion and scattering. Thermal stability is important, as temperature changes can affect focus. The design must also protect against environmental factors like humidity and dust, as specified by ingress protection ratings.

Common Materials

Optical glass, Plastic polymers, Anti-reflective coatings

Technical Parameters

Parameter	Typical range	Notes & selection driver
Focal Length	10–500 mm	Determines beam focusing and working distance.ISO 10110
Clear Aperture	5–100 mm	Limits the beam diameter that can pass without vignetting.ISO 10110
Wavelength Range	190–2000 nm	Coating and material must match the laser wavelength.
Surface Figure (PV)	λ/10–λ/2 λ (633 nm)	Higher precision reduces wavefront distortion.ISO 10110
Surface Roughness (Ra)	0.5–10 nm	Lower roughness minimizes scattering.ISO 10110
Transmittance	90–99.9 %	Depends on coating; higher for AR-coated lenses.ISO 9211
Damage Threshold	5–50 J/cm²	Maximum laser fluence before damage occurs.
Operating Temperature	-40–+80 °C	Thermal expansion affects focus stability.
Operating Humidity	5–95 % RH	Condensation can damage coatings.
Ingress Protection (IP)	IP54–IP65	Protects against dust and water jets.IEC 60529
Material	N-BK7, UVFS, CaF2	Choose based on wavelength and thermal stability.ISO 12123
Weight	0.05–2.0 kg	Affects mounting and handling.

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

Components / BOM

Objective Lens
Primary focusing element that determines measurement resolution

Material: Optical glass
Collimating Lens
Creates parallel laser beam for long-distance measurements

Material: Optical glass
Lens Mount
Precision housing that aligns and secures lens elements

Material: Aluminum alloy
Anti-Reflective Layers
Cut the reflection loss at every glass-air surface in the stack.

Applied To / Applications

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

Laser Measurement Scanner

View system integration details

EDM Transceiver

View system integration details

Manufacturers of Optical Lens System

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Frequently Asked Questions

What is the typical focal length range for this optical lens system?

The focal length range is 10–500 mm, as listed in the reference specifications. However, the exact focal length for a specific application must be confirmed with the manufacturer, as it depends on the scanner design and measurement requirements.

Which standards apply to the optical lens system?

Match each reference to a declared requirement: ISO 10110 for optical drawings, ISO 9211 for coatings, the current ISO 21254 series for laser-induced-damage testing, MIL-STD-810 for tailored environmental testing, IEC 60068-2-78 for steady-state damp-heat testing, and IEC 60529 for an enclosure IP classification. The older ISO 11254 series is withdrawn. None of these references by itself proves the listed range or compliance of a specific assembly.

What materials are used in the lens system?

The system may use optical glass, plastic polymers, and anti-reflective coatings. Typical substrate materials include N-BK7, UVFS (UV fused silica), and CaF2 (calcium fluoride). The choice depends on the laser wavelength and thermal stability requirements.

How does the system handle environmental conditions?

The page lists -40 to +80 °C, 5–95% RH and IP54–IP65 only as directory comparison references. MIL-STD-810 and IEC 60068-2-78 are test frameworks, not proof of those operating ranges, and an IP code applies to the tested enclosure rather than a bare lens. Obtain model-specific environmental limits, test severities, duration, acceptance criteria and the enclosure IP report.

Data Basis

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Preliminary Technical Classification

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source:	Specify wavelength, bandwidth, polarization, beam diameter/profile, pulse duration, repetition rate and maximum fluence or irradiance.
mechanical:	Confirm mount interface, datum, allowable stress, alignment method, mass and available envelope.
environment:	Specify operating/storage temperature and humidity, pressure or vacuum, cleanliness, shock/vibration and enclosure needs for the complete assembly.
image quality:	Define wavefront, surface figure, roughness, centering, coating and transmittance requirements with wavelength and test conditions.
optical function:	Define focal length, conjugates, field of view, numerical aperture, clear aperture, spot size and allowable distortion.

Optical Lens System

Product Specifications

Applied To / Applications

Industrial Ecosystem & Supply Chain Structure

Application Fit & Sizing Matrix

Reliability & Engineering Risk Analysis

Compliance & Manufacturing Standards