LDR03 Multi-Angle Laser Line Module
LDR03 Laser Line Module is a compact laser projection component designed to generate visible reference lines and laser patterns for positioning and alignment applications.
What Is the LDR03 Laser Line Module?
The LDR03 is a compact laser line module designed to generate visible laser reference lines and patterns for measurement, alignment, positioning and industrial applications. Manufactured by Dongke Electric in our TÜV-accredited facility, the module supports multiple projection configurations and wavelength options, and is engineered for integration into OEM equipment and measurement systems.
Multiple Configurations
The LDR03 series provides a wide selection of projection configurations. Whether a narrow reference line, wide-angle laser line, cross pattern or point projection is required, the appropriate configuration can be selected according to the intended application.
Multiple Laser Projection Angles
30° | 45° | 60° | 90° | 110° | 120°
This range allows users to select different laser projection widths and angles according to application requirements.
Multiple Projection Patterns
Single Line | Cross Line | Dot | Ground Line
Single line for straight visual reference. Cross line for intersecting references. Dot for point positioning. Ground line for surface reference projection.
Multiple Wavelength Options
520 nm | 635 nm | 650 nm
Different wavelength options allow the product configuration to match different application requirements.
Wide DC Operating Voltage & Low Current
DC 3–12 V | <30 mA (650 nm) | <50 mA (635 nm)
Wide voltage range for integration into compatible DC-powered equipment. Note: specifications do not provide a current value for the 520nm version.
Positioning, Alignment & Reference
LDR03 is suitable for applications requiring laser line, laser cross, point or surface reference projection.
Positioning Applications
Suitable for equipment and systems requiring a visible laser reference for positioning. Provides precise visual reference lines for setup and alignment tasks.
Alignment Applications
Suitable for applications where projected laser lines are used as visual alignment references. Supports multiple angles and patterns for different alignment geometries.
Measurement & Reference Equipment
The available line angles and projection patterns make the series suitable for equipment requiring visual reference lines or projected positioning marks.
Equipment Integration
With DC 3–12V operation and multiple projection configurations, the module can be selected for compatible equipment requiring laser projection functionality.
Why Choose the LDR03 Series
Multiple Configurations in One Product Platform
Instead of limiting the application to one fixed projection format, the LDR03 series provides options for projection angle, projection pattern and wavelength — allowing the module to be configured according to specific application requirements.
Example Configurations
The suitable combination should be selected according to the specific application requirement. For example:
120° + Single Line + Selected Wavelength
Technical Parameters
All specifications are based on Dongke Electric product catalog data.
LDR03 at a Glance
Dimensions & Electrical Circuit Diagram
Engineering drawings available upon request. Contact us for detailed CAD files and 3D models for your design team.
LDR03 FAQ
Which laser line angles does the LDR03 support?
The LDR03 supports six divergence angles: 30°, 45°, 60°, 90°, 110° and 120°.
Is the LDR03 available as a cross-line laser module?
Yes. The LDR03 series supports cross-line projection and can also be configured for single-line, dot or ground-line projection.
What is the difference between the LDR03 configurations?
The LDR03 configurations can differ by projection angle, projection pattern and rated wavelength. Available wavelengths are 520nm, 635nm and 650nm.
What is the LDR03 laser line module?
The LDR03 is a laser line module designed to generate visible laser reference patterns. It supports multiple projection angles from 30° to 120°, as well as single-line, cross-line, dot and ground-line projection options.
What laser projection angles are available?
The LDR03 laser line module is available with: 30°, 45°, 60°, 90°, 110° and 120° divergence angles.
Does the LDR03 support cross-line projection?
Yes. The LDR03 series supports cross-line projection. Other available projection options include single line, dot and ground line.
What wavelengths are available?
The LDR03 series is available in: 520nm, 635nm and 650nm.
What voltage does the LDR03 laser module use?
The LDR03 operates at: DC 3–12V.
What is the operating current?
According to the product specifications:
• 650nm version: less than 30mA
• 635nm version: less than 50mA
Note: The supplied specifications do not state a work-current value for the 520nm version.
What applications is the LDR03 suitable for?
The LDR03 is suitable for applications requiring laser line projection, visual positioning, alignment references or projected laser patterns.
Can I choose different projection configurations?
The series provides different combinations of projection angle, projection pattern and wavelength. The suitable configuration should be selected according to the required application.
Which laser module is suitable for measurement equipment?
For measurement applications, a laser module with high beam stability and precise line definition is recommended. The LDR03 series offers multiple wavelength options (520nm, 635nm, 650nm) and projection angles from 30° to 120°, allowing integration into measurement instruments that require a clear optical reference line or point.
What is the difference between red and green laser modules?
Red laser modules (635nm, 650nm) are widely used for general alignment and positioning applications. Green laser modules (520nm) produce a wavelength that is more visible to the human eye, making them suitable for environments where higher visibility is required. The choice depends on the application environment and visibility requirements.
How do I select a laser module for my application?
Laser module selection depends on several factors: (1) Projection angle — wider angles (90°–120°) cover larger areas, while narrower angles (30°–60°) provide focused reference lines. (2) Wavelength — 520nm for high visibility, 635nm/650nm for general use. (3) Projection pattern — single line, cross line, dot or ground line depending on the reference type needed. (4) Operating voltage — DC 3–12V for integration into existing equipment. Contact our engineering team for application-specific recommendations.
Built for Global Standards
Dongke Electric products are manufactured in our ISO 9001:2015 facility with TÜV-certified in-house laboratories. Every unit passes four quality gates before it ships.
Four Quality Gates, One Reliable Product
Each stage is backed by documented procedures, trained personnel and calibrated instruments.
Explore Our Full Laser Module Range
Dongke Electric offers a comprehensive selection of laser line modules with different projection angles, wavelengths and configurations for measurement, alignment and positioning applications.
Power Solutions for LDR03 Laser Modules
Reliable DC power is essential for stable laser module operation. Explore our dedicated Laser DC Power Supplies designed for laser applications and equipment integration.
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