lilly-electronics

D8×21mm 940nm Invisible IR Dot Laser Module, Internal Adjustable Focus 5mW 20mW 50mW 100mW

$76.00

~~$84.00~~ $76.00

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Power 5mW 50mW 100mW 20mW

Focus Type Adjustable Fixed Focus

Quantity

940nm Invisible Infrared Dot Laser Module φ8×21mm

This 940nm infrared dot laser module emits invisible IR light, not visible to the human eye. You can only observe the laser spot via infrared cameras or IR detectors. Built with full aviation aluminum metal housing with matte black insulated oxidation finish for great heat dissipation and durability. Adjustable or fixed focus optional, multiple power selections. Custom size and wavelength are available upon request. Perfect for night vision supplementary lighting, industrial positioning, sensor detection, optical experiments and equipment integration.

⚠️ Laser Safety Warning

This product emits invisible infrared laser radiation. 20mW, 50mW and 100mW versions are Class 3B Laser.

Avoid direct or reflected laser beam exposure to eyes and skin, it may cause permanent eye damage.
This is an industrial optical component. NOT a laser pointer, NOT a toy.
Keep out of reach of children. Wear laser protective goggles during operation.
Never aim the laser at people, animals or reflective surfaces.

Specifications

Item	Parameter
Dimension	φ8×21mm, other sizes customizable
Housing Material	Aviation aluminum, all-metal shell
Surface Treatment	Matte black oxidation, surface insulation
Output Wavelength	940nm ±10nm, other wavelengths customizable
Output Power	＜20mW / ＜50mW / ＜100mW (optional)
Effective Range	Up to 1100 meters (indoor test; performance affected by ambient light)
Laser Spot	Elliptical dot, ＜12mm @10m. Focus can be tuned for optimal spot at target distance
Focusing Mode	Adjustable focus / fixed focus (optional)
Control Circuit	ACC constant current circuit
Working Voltage	2.8–5.2VDC
Working Current	＜100mA (20mW), 150mA (50mW), 180mA (100mW)
Working Temperature	10℃ ~ +50℃
Storage Temperature	-20℃ ~ +70℃
Lifespan	>10000 hours continuous working
Laser Safety Class	Class 3B (20mW, 50mW, 100mW)

What's Included

1 × Dot Infrared Laser Module

Notes

✅ Customization available: custom dimensions, custom wavelengths, fixed focus version.
⚠️ Infrared beam cannot be seen by naked eyes. An IR camera is required to check the laser spot.
⚠️ Strong ambient light will reduce the effective working distance.
⚠️ Please follow laser safety guidelines strictly during use. Improper operation may result in eye injury.