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focusfinder.proby RMA Precision instrument · 2026

Find the focal point.
Measure it, don't
guess it.

focusfinder.pro precisely determines the real focal-point position of a laser beam. It pairs a simple measurement routine with numerical analysis — removing subjective operator judgement and reaching accuracy down to 50 μm*.

Request a demo → See how it works
Accuracy
down to 50 μm*
Min. spot Ø
from 35 μm
Coverage
1 unit · many machines
F / 01 · find your focus Find Your
Focus. focusfinder.pro — laser scanning an engraved test pattern focusfinder.pro · in process
focusfinder.pro transport case and measurement key Device · case + key
Rayleigh curve fit and focal position result Result · beam caustic fit
50 μm accuracy No subjective assessment Portable across stations Fully automated analysis Single Mode lasers
§ 01 — Why focus matters

A few microns off focus,
and the weld goes unstable.

In laser welding — and especially with thin copper and aluminium — even a small deviation of the focal point from the work surface translates into an unstable process and weld defects. Standard visual assessment can't resolve that. focusfinder.pro is a complete RMA measurement solution built to pinpoint the real focal position where it actually counts.

→
50 μm*
Measurement accuracy
→
35 μm
Min. spot diameter
→
03 steps
Engrave · acquire · result
→
1 unit
Shared across machines
↓
0 guesswork
Numerical, not visual

*depending on the customer's system configuration.

§ 02 — Advantages

Why teams choose
focusfinder.pro.

Camera-class accuracy without camera-class cost or complexity — built for the reality of a production floor with more than one welding machine.

A / 01

Accuracy down to 50 μm*

Enough for welding copper, aluminium and other hard-to-weld materials — exactly where pulsed and visual methods fall short.

A / 02

Simple measurement routine

Engrave a test pattern, capture the plate image, run the automatic analysis. No elaborate installation and no changes to the machine structure.

A / 03

No subjective assessment

The result comes from a numerical fit of the Rayleigh curve of the beam caustic — not from a technologist's or operator's eye.

A / 04

One device, many machines

Unlike permanently mounted camera systems, focusfinder.pro moves between stations — lower cost to deploy and to run.

A / 05

Optimal price-to-accuracy ratio

Accuracy close to camera systems at a fraction of the price — lower purchase and maintenance cost.

focusfinder.pro transport case and measurement key
focusfinder.proF · device
§ 03 — How it works

Three steps,
fully automated.

From an engraved test pattern to a numerical focal-position result — the operator runs the routine, the algorithm does the judging.

01 · engrave Laser engraving the test pattern
01/ 03

Engrave the pattern

The laser writes the designed test pattern across the measurement plate.

02 · acquire Acquiring the image of the test plate
02/ 03

Acquire the image

The engraved pattern is digitised — the kit produces a clean digital image of the plate, ready for numerical analysis.

03 · result Ideal profile and focal-point position
03/ 03

Automatic result

The algorithm fits the ideal profile and reports the laser's focal position to 50 μm* accuracy.

§ 04 — Where it fits

Built for processes where
focus decides quality.

Laser welding programmes that demand repeatable focal positioning at the level of tens of microns.

U / 01POWER ELECTRONICS

Precision welding in
power electronics.

Laser welding across electronics and power electronics — power modules, busbars, cell interconnects and IGBT / SiC components, where focal position must repeat to tens of microns.

power modulesbusbarIGBT / SiC
U / 02LASERS

Single Mode
lasers.

Especially effective with small-spot lasers (from 30 μm) — infrared, green and blue sources — where focus tolerance is unforgiving.

IRgreenbluefrom 30 μm
U / 03MATERIALS

Hard-to-weld
materials.

Copper, aluminium, stainless steel and their bimetallic joints — processes where a focal-position error leads straight to weld defects.

CuAlSSbimetal
Next step

Take care of your process.
We'll size the configuration.

Engineered for process stability. Built for production reality.

Talk to sales
sales@myrma.eu
+48 58 350 65 50
Product
focusfinder.pro
A precision instrument by RMA
Request
Live demo
On your laser, with your materials
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