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PLH3D-2W Engraving Laser Head

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Smallest but still powerful laser head from PLH3D series. PLH3D-2W is a medium power laser head equipped with 450 nm laser diode and high-resolution lens. Compact design and very lightweight (70 grams) allow installing the laser head even in small and delicate machines. Driver equipped with LED informs the user when the laser head is armed.

About the PLH3D-2W engraving laser head

PLH3D-2W is the medium power 2W professional engraving laser head. This laser head allows to cut or engrave materials such as wood, paper, leather, cardboard, and many others.

Factory set lens – the engraving laser head is shipped the High-Resolution Triplet lens installed and adjusted to focus at 60.0 mm (measured from the front-face surface of the laser head to engraving plane). This focal distance has a well-optimized focal spot size which is suitable for many engraving and cutting applications. This is the best-optimized focus distance to start with! 

This lightweight 70-gram laser head doesn’t require any additional cooling. Fan design makes it work as a fully customized air nozzle protecting the lens from dirt and cooling the laser head. PLH3D-2W works with common 12 V power supply (min 1.5 A current).

The driver is equipped with an LED indicator, which displays all the required information. The temperature control system would turn off the laser head in case of exceeding critical temperature. The small-sized driver attached directly to the laser head improves the speed of diode modulation. This also allows connecting longer cables to the head.

Analog modulation enables the user to control the laser power. 0 V = laser OFF, 5 V laser ON, 2 V ~40% power. This can also work as TTL using a voltage from 0 to 5 V.

In order to modulate power through PWM, the base frequency has to be set between 5 and 10 kHz. Conducted thermal tests on several prototypes allowed us to optimize the radiator’s shape and enable efficient cooling, keeping up with a small size of the device. Besides the standard functionality, small sized laser spot gives the possibility to illuminate plates, covered with a photosensitive surface, which gives a chance for very quick PCB prototyping.

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