Laser Module

What Is a Laser Module?

• A laser module is an electronic device that emits a focused beam of light (laser).

• Common in electronics kits as a laser transmitter module.

• Usually contains: Laser diode Lens (for focusing beam) Driver circuit (to control current safely)

Key Features

• Wavelength: ~650 nm (visible red laser)

• Operating Voltage: 3 V 5 V DC

• Current Consumption: ~3040 mA

• Output Power: Typically <5 mW (safe low-power class)

• Beam Type: Focused dot (sometimes line depending on lens)

• Size: Small and compact (easy for embedded proje (Typical 3-Pin Module)

  • VCC (+): Power supply (35 V)

  • GND (): Ground

  • S / Signal: Control pin (HIGH = laser ON, LOW = OFF)

   

  (Some modules have only 2 pins always ON when powered)

  How It Works

  • Power is supplied to the laser diode.

  • The diode emits coherent light (laser beam).

  • The lens focuses the beam into a narrow, straight line or dot.

  • If a signal pin is present, a microcontroller can turn it ON/OFF or blink it.

   

  Applications

  • Laser pointer / indicator

  • Security systems (laser tripwire alarms)

  • Object detection (with LDR/photodiode receiver)

  • Alignment & positioningp>Robotics and automation projects

  • Laser communication experiments

   

  Typical Specifications

  Safety Notes

  • Never point laser at eyes even low-power lasers can damage vision.

  • Avoid reflecting surfaces (mirrors, glass).

  • Not a toy handle carefully.

  Summary

  • Type: Laser diode module

  • Output: Focused red laser beF (via microcontroller)

  • Use Case: Detection, alignment, signaling, DIY electronics