A laser diode, also known as an injection laser or diode laser, is a semiconductor device that produces coherent radiation (in which the waves are all at the same frequency and phase) in the visible or infrared (IR) spectrum when current passes through it. Laser diodes are used in optical fiber systems, compact disc (CD) players, laser printers, remote-control devices, and intrusion detection systems.
The laser head is composed of a light-emitting tube, condenser lens and adjustable copper sleeve and it is assembled when delivered, the focal length of the lens is adjusted glued by strong glue stick, which can work directly after connecting to a 5v dc power supply.
- Working Voltage: 3v – 5V
- Laser Shape & Colour: Red Dot
- Copper Head Diameter is 6mm
- Light power: <5mW
- Supply Voltage: 4.5VDC
- Operating Current: <40mA