LaserPecker 3 Laser Focusing Instructions

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Why is Focusing Necessary?

For Laser engravers, lenses are often used to focus the laser beams. The laser beam will be refracted or reflected when passing through the lens, its direction and focus will then be altered.


Without proper focusing, the laser beam may defocus, bringing unclear, blurry, or uneven engravings.


Proper focusing will ensure the laser beam gathers on the right point, concentrating its energy at the focus for high-quality engravings.


Focusing Range of LP3

See the table below:


  Electric Stand 
Focusing Range from the Base Plate 100mm - 220mm
Supported Material Thickness 90mm


Focusing-related Values

the minimum distance from the field lens to the Base Plate is 100mm.

the travel distance of the electric stand is 120mm.

LP3's recommended focusing distance is 130mm;

Press the electric stand button to rise or drop 1mm;

Press and hold for continuous rise or drop



LP3 Focusing Principle

LP3 uses dual red lights for focusing. Next to the laser field lens, there are two apertures emitting the red light, converging at 130mm from the field lens.


Based on such a focusing principle, when both red lights hit the material to be engraved simultaneously, two red dots will be generated. If the material is exactly 130mm from the lens, two red dots will merge into one brighter dot, indicating successful focus.


Focusing Methods

In practical use, three focusing methods are available based on different scenarios:

Red Light Focusing, Measurement Focusing


1. Red Dot Focusing

Adjust the electric stand's height to overlap two red dots on the engraving material, based on LP3 focusing principle.

Red Dot Focusing


2. Measurement Focusing

Measure the distance between the field lens and the material to be engraved with a ruler, then adjust the height of the electric stand until the lens is 130mm from the material.

Red Dot Focusing

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