28° Large Circle Laser Module – Red / Green / Blue
The 28° Large Circle Laser Moduleis a high-stability semiconductor laser designed to project a large, uniform circular laser pattern for positioning, alignment, marking, installation guidance and industrial applications.
With a 28° optical projection angle, the circle diameter is approximatelyhalf of the working distance, providing a simple and predictable projection relationship for field installation.
For example:
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At 1m working distance, circle diameter is approx. 0.5m
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At 5m working distance, circle diameter is approx. 2.5m
The projected circle is designed to remain round, thin and uniform with high optical stability.
Photex Laser offers639nm red, 520nm green and 450nm blueversions, with corresponding power supplies and universal mounting brackets.
Key Features
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28° large circle laser projection
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Circle diameter ratio approx. 1:2 to working distance
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Red / Green / Blue laser options
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Thin and uniform circular line
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High optical stability
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0–10m installation height
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Internal optical path
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Single-channel output
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Industrial-grade laser module
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Matching adjustable power supply
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Universal mounting bracket included
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OEM / ODM customization available
Technical Specifications
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Parameter
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Specification
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Product Type
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Large Circle Laser Module
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Optical Pattern
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Circular / Ring Pattern
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Lens Angle
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28°
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Optical Path
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Internal Optical Path
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Output Type
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Power Type
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Power Supply Type
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Single Power Supply
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Channel
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Single Channel
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Installation Height
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0–10m
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Circle Diameter Ratio
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Approx. 1:2 to Working Distance
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Pattern Shape
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Circular
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Line Quality
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Thin & Uniform
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Wavelength
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639nm / 520nm / 450nm
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Output Power
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Depends on Model
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Working Current
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Depends on Model
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Power Supply
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Adjustable Power Adapter
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Mounting
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Universal Bracket
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Customization
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Available
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Available Models
28° Red Large Circle Laser
Model:HW639AY220-16GD-28°
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Wavelength: 639nm
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Output Power: 220mW
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Working Current: ≤300mA
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Power Supply: 1–3V Adjustable
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Accessories: Universal Bracket
28° Green Large Circle Laser
Model:HW520AY150-16GD-28°
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Wavelength: 520nm
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Output Power: 150mW
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Working Current: ≤800mA
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Power Supply: 1–12V Adjustable
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Accessories: Universal Bracket
28° Blue Large Circle Laser
Model:HW450AY500-16GD-28°
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Wavelength: 450nm
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Output Power: 500mW
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Working Current: ≤600mA
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Power Supply: 1–12V Adjustable
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Accessories: Universal Bracket
Projection Performance
The projected circle diameter is approximately half of the irradiation distance.
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Working Distance
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Approx. Circle Diameter
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1m
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0.5m
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2m
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1.0m
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3m
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1.5m
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5m
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2.5m
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The actual projection size may vary slightly depending on optical tolerance, installation angle and target surface.
Optical Performance
The 28° optical system is designed to provide:
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Round circular projection
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Thin laser line
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Uniform ring thickness
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Stable pattern geometry
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Predictable projection scaling
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Reliable long-distance positioning reference
Standard Package
The complete set includes:
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1 × Laser Module
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1 × Matching Adjustable Power Adapter
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1 × Universal Mounting Bracket
Different wavelength and power configurations are matched with the appropriate power adapter.
Applications
Industrial Positioning
Suitable for:
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Equipment positioning
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Large-area alignment
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Installation guidance
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Production-line reference
Circular Marking
Used for:
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Circular boundary indication
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Area reference
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Centered installation
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Visual marking
Construction & Installation
Applicable to:
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Installation guidance
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Layout positioning
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Equipment centering
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Site marking
Optical Alignment
Suitable for:
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Calibration systems
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Experimental equipment
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Visual reference projection
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Industrial optical setups
Photex Laser provides customized large-circle laser modules for positioning, alignment, marking and industrial optical applications.
