650NM 6MM 5V 5MW LASER

The 650nm 6mm 5V 5mW Laser Dot Diode Module is a high-quality red laser head designed for hobbyists, engineers, and educators working on electronics and optical projects. The module is composed of three precision-engineered parts: a light-emitting tube, a condenser lens, and an adjustable copper sleeve. These components are factory-assembled, and the focal length of the lens is pre-adjusted and secured with strong glue, ensuring consistent performance straight out of the box.

Operation is straightforward — simply connect the module to a 5V DC power supply and it begins emitting a sharp, focused red laser dot instantly. The laser benefits from the unique characteristics that ordinary light sources lack: excellent monochromaticity, coherence, strong directionality, and high brightness, making it suitable for a wide range of precision applications.

The compact 6mm cylindrical housing allows easy integration into custom enclosures, robotic platforms, and embedded systems. Important safety note: Avoid pointing the laser directly at eyes, and take care when handling the power supply to prevent short circuits, which could damage the laser cell or cause battery-related hazards.

Specifications

• Wavelength: 650nm (Red)
• Output Power: 5mW
• Operating Voltage: 5V DC
• Diameter: 6mm
• Beam Type: Dot (single point)
• Housing Material: Copper sleeve with adjustable focus (pre-glued)
• Optical Components: Light-emitting tube + condenser lens
• Focal Length: Pre-adjusted and fixed with strong adhesive
• Connection: Two wires (positive and negative) for direct DC supply

Applications

• Electronic Pointers: Ideal as a laser pointer for teachers, presenters, and lecturers.
• Laser Level Meters: Mount on a rotating motor to project a straight horizontal line for decorating, picture hanging, or construction alignment.
• Micro LCD Projectors: Remove the condenser lens to project images through a controllable LCD screen onto a wall.
• Remote Laser Monitoring: Aim the laser at a window pane to detect vibrations from sound inside a room — useful in research and acoustic experiments.
• Light-Controlled Anti-Theft Alarms: Combine with photoresistors and reflectors to create a perimeter detection zone for fish ponds, gardens, or restricted areas.
• Laser Wireless Communication: Pair two laser transceivers across distant rooftops to transmit data, files, or network signals using microcontroller serial protocols.
• Robotics and Object Detection: Use as a reference beam for distance sensing, line-following robots, and targeting systems.
• Arduino and Raspberry Pi Projects: Integrate into DIY builds for STEM education, automation, and IoT experiments.
• Laser Toys and Hobbyist Builds: Suitable for entertainment devices and creative maker projects.

Safety Reminder: Do not stare directly into the beam or point the laser at people, animals, or vehicles. Always handle with care to avoid short circuits that could damage the laser diode or power source.