Editorial Technical Reference

Structured Light Projector

This page explains how Structured Light Projector is classified within Computer, Electronic and Optical Product Manufacturing. Technical values and manufacturer relationships are research references; confirm the current specification and supplier evidence for each order.

Technical Definition & Core Assembly

Optical device that projects precisely controlled light patterns onto surfaces for 3D scanning applications

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Product Specifications

Technical details and manufacturing context for Structured Light Projector

Definition
A structured light projector is a critical optical component within a 3D pattern scanner system that emits precisely controlled light patterns (typically grids, stripes, or coded patterns) onto target surfaces. It works in conjunction with cameras to enable non-contact 3D surface reconstruction by analyzing how the projected patterns deform when striking objects of varying shapes and distances. The projector generates specific light patterns using either laser diodes or LEDs combined with optical elements like diffraction gratings, micro-lens arrays, or digital micromirror devices (DMD). These patterns are projected onto target surfaces, where their deformation is captured by synchronized cameras. The system then calculates 3D coordinates through triangulation algorithms based on the observed pattern distortions. This component is designed for integration into industrial 3D scanning systems, offering a projection pattern type of coded patterns, a pattern resolution of 1920x1080 pixels, a projection angle of 45-60 degrees, and a working distance of 0.3-2.0 mm. It uses a blue laser with a wavelength of 450 nm, optical output power of 1-5 W (Class 3B laser), and a pattern frame rate of 60-120 fps. The operating temperature range is -10 to 50 °C, storage temperature -20 to 70 °C, and relative humidity 10-90% (non-condensing). It has an ingress protection rating of IP54 per IEC 60529, input voltage of 12-24 V DC, power consumption of 15-30 W, and weight of 0.5-1.5 kg. Materials used include aluminum alloy, optical glass, and semiconductor materials. These specifications are directory reference ranges; verify model-specific values and standards with the legal manufacturer or supplier before procurement or integration.
Working Principle
The projector generates specific light patterns using either laser diodes or LEDs combined with optical elements like diffraction gratings, micro-lens arrays, or digital micromirror devices (DMD). These patterns are projected onto target surfaces, where their deformation is captured by synchronized cameras. The system then calculates 3D coordinates through triangulation algorithms based on the observed pattern distortions.
Common Materials
Aluminum alloy, Optical glass, Semiconductor materials
Technical Parameters
ParameterTypical rangeNotes & selection driver
Projection Pattern TypeRequiredCoded n/aType of light pattern projected (grid, stripe, binary code, etc.)
Pattern ResolutionRequired1920x1080 pixelsResolution of the projected light pattern
Projection AngleRequired45-60 degreesField of view angle of the projected light
Working DistanceRequired0.3-2.0 mmOptimal distance from projector to target surface
Light Source Wavelength450 nmBlue laser for high contrast
Optical Output Power1-5 WClass 3B laser
Pattern Frame Rate60-120 fpsHigh speed for dynamic scanning
Operating Temperature-10-50 °CIndustrial grade
Storage Temperature-20-70 °CNon-condensing
Relative Humidity10-90 %Non-condensing
Ingress ProtectionIP54Dust and splash resistantIEC 60529
Input Voltage12-24 V DCWide input range
Power Consumption15-30 WDepends on pattern rate
Weight0.5-1.5 kgCompact for integration

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
  • Light Source Module
    Generates the base light for pattern projection
    Material: Laser diodes/LEDs with heat sink
  • Pattern Generation Element
    Creates the specific light patterns (grids, stripes, etc.)
    Material: Diffraction grating/DMD chip/micro-lens array
  • Projection Lens Assembly
    Focuses and projects the light patterns onto target surfaces
    Material: Multi-element optical glass lenses
  • Cooling System
    Maintains optimal operating temperature for light source
    Material: Aluminum heat sink with optional fan

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for Structured Light Projector.

Pattern Projector 3D Scanner Projector

Applied To / Applications

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

3D Pattern Scanner
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3D Vision Guidance System
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Industrial Ecosystem & Supply Chain Structure

Complementary Systems
Downstream Applications
Specialized Tooling

Application Fit & Sizing Matrix

Operational Limits
pressure: Atmospheric only (non-pressurized optical system)
other spec: Humidity: 20-80% non-condensing, Vibration: <2G, Dust: IP54 rating
temperature: 0°C to 40°C (operating), -10°C to 50°C (storage)
Media Compatibility
✓ Metallic surfaces (aluminum, steel) ✓ Plastic components (ABS, polycarbonate) ✓ Machined parts with matte finishes
Unsuitable: Highly reflective surfaces (mirrors, polished chrome) or transparent materials (glass, clear acrylic)
Sizing Data Required
  • Required measurement volume (X,Y,Z dimensions)
  • Target measurement accuracy/resolution (microns/mm)
  • Working distance from projector to object surface

Reliability & Engineering Risk Analysis

Failure Mode & Root Cause
Optical Degradation
Cause: Thermal stress from prolonged operation causing lens/coating delamination or misalignment, compounded by dust accumulation on optical surfaces.
Electromechanical Failure
Cause: Vibration-induced loosening of internal components (e.g., DLP mirrors, cooling fans) or power supply instability leading to erratic projection patterns.
Maintenance Indicators
  • Distorted or flickering light patterns indicating optical/alignment issues
  • Unusual audible humming/grinding from internal fans or cooling systems
Engineering Tips
  • Implement periodic optical calibration using reference grids and maintain strict environmental controls (temperature/humidity/dust)
  • Establish vibration monitoring on mounting points and use stabilized power supplies with surge protection

Indicative industry ranges for design and RFQ preparation. Confirm the exact figures and applicable standard with the manufacturer before specifying.

Compliance & Manufacturing Standards

Applicable Standards
ISO 11146: Laser beam parameters - test methods for width, divergence and beam propagation ratio ANSI Z136.1: Safe Use of Lasers CE marking for electromagnetic compatibility (EMC) Directive 2014/30/EU

Quoted from the published standard.

Manufacturing Precision
  • Pattern distortion: <0.1% over full field
  • Projector alignment: +/-0.05° angular tolerance
Quality Inspection
  • Laser power output verification test
  • Pattern accuracy validation using calibrated reference targets

Manufacturers of Structured Light Projector

1 company lists this product among what they make. Company figures are quoted from each company's own website; every card states where the relationship came from.

DAHENG IMAGING
Beijing, Beijing, CN
Listed on the company's own website · profile compiled by CNFX from public sources
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Manufacturer listings support early research and capability understanding. They are not certification, ranking, or transaction guarantees.

Technical documentation
Request current drawings, revision history, and a signed specification sheet.
Manufacturing capability
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Inspection readiness
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Frequently Asked Questions

What is the typical application of this structured light projector?

It is used in industrial 3D scanning systems for non-contact surface reconstruction, such as quality inspection, reverse engineering, and dimensional measurement.

What light source does it use?

It uses a blue laser with a wavelength of 450 nm, providing high contrast for pattern projection.

What is the ingress protection rating?

The component has an IP54 rating per IEC 60529, indicating dust and splash resistance. Verify actual rating for the specific model.

What are the environmental operating limits?

Operating temperature is -10 to 50 °C, storage -20 to 70 °C, and relative humidity 10-90% non-condensing. Confirm for your application.
Data basis: editorial classification, named public sources where available, and source-reviewed manufacturer records. See the editorial policy.

Data Basis

Editorial classification, named public sources where available, and source-reviewed manufacturer records.

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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