850nm IR Laser Diode Module – Focusable Dot/Line/Cross, 5–50mW

850nm Infrared Laser Diode Module – Focusable Dot, Line & Cross Beam

The Elubor 850nm Infrared Laser Diode Module is a compact, precision-engineered optical component designed for electronics enthusiasts, engineers, and DIY optics projects. Available in 5mW, 30mW, and 50mW output power options, this versatile mini laser module features selectable beam shapes — Dot, Line, and Cross — and a fully adjustable focus for maximum flexibility across a wide range of applications.

Operating at an 850nm near-infrared wavelength, the beam is invisible to the naked eye, making it ideal for use in sensing, alignment, imaging, and machine vision systems where discreet IR illumination is required. Its compact 12×35mm metal housing makes integration into existing builds straightforward and reliable.

Key Features

• Wavelength: 850nm (Near-Infrared, invisible to the naked eye)
• Output Power Options: 5mW / 30mW / 50mW
• Beam Shapes: Dot (rectangular to oval), Line, Cross
• Adjustable Focus: Yes — rotate the lens for precise beam control
• Working Voltage: 3V–5V DC
• Dimensions: 12×35mm / 12×40mm
• Material: Durable metal housing, silver finish
• Self-contained module — easy to integrate into DIY, industrial, and research setups

Specifications

⚠️ Laser Safety Notice

This is a precision optical instrument emitting an invisible 850nm infrared beam. Always wear appropriate laser safety goggles rated for 850nm wavelength when operating this module. This product is intended for use by individuals with experience in optics, electronics, or laser DIY projects. Read all technical documentation before use and handle with care.

For laser safety guidelines, refer to the U.S. Consumer Product Safety Commission (CPSC) Laser Safety Resources.

Ideal Applications

• IR illumination for night vision cameras
• Machine vision and object detection systems
• Optical alignment and positioning
• DIY electronics and optics projects
• Research and laboratory setups
• Security and surveillance illumination

What's in the Box

• 1× 850nm IR Laser Diode Module

Note: Batteries are not included. Laser protection goggles are strongly recommended and must be sourced separately.

Frequently Asked Questions

Q: Can I see the 850nm infrared laser beam with my naked eye?

A: No. The 850nm wavelength falls in the near-infrared (NIR) spectrum, which is completely invisible to the human eye under normal conditions. However, many camera sensors — including smartphone cameras — can detect and display the beam. This is normal and expected behavior for 850nm IR laser modules.

Q: What beam shapes does this 850nm laser module support?

A: This focusable IR laser diode module supports three selectable beam shapes: Dot (which can range from rectangular to oval depending on focus), Line, and Cross. The adjustable focus ring allows you to fine-tune the beam spread for your specific application.

Q: What power level should I choose — 5mW, 30mW, or 50mW?

A: Choose based on your application's needs. The 5mW option is suitable for short-range sensing and low-power alignment tasks. The 30mW and 50mW variants offer greater range and intensity, ideal for machine vision, surveillance illumination, or longer-distance IR applications. Always ensure you use appropriate laser safety goggles rated for 850nm, especially at higher power levels.

Q: What voltage does this laser module require?

A: The module operates at a working voltage of 3V to 5V DC, making it compatible with a wide range of microcontrollers and power supplies, including Arduino, Raspberry Pi, and standard 3.3V/5V regulated supplies.