Laser Focusing Head
Laser focusing head
The laser is delivered to the workstation by means of a flexible fiber optic cable, in this case, it is delivered by laser optical fiber manufactured by Gold Technic. Typically the laser is delivered to the work piece at a low power density which requires focusing to enable materials processing, usually welding. The laser focusing head takes the “raw” laser beam and focuses to a small diameter typically less than 0.4mm down to 0.1mm depending on the laser fiber core size. More information about laser fiber can be found on our laser optical fiber page.
For Nd:YAG and fiber lasers there are a number of different types and customizable Laser focusing head. Below shows a few options, including a schematic of a 90 degree focus head and a straight in-line focusing head. Selection will be based on the application, space and budget.
Laser focusing head repair
In the above laser focusing head, it has been badly damaged by accumulation of dirt and backsplash caused by welding. It is important that to clean and change the protection lens cover, and replace it as required because contamination may lead to power transmission loss.
For non-critical welds a loss of 5 percent is not significant, but heavy dirt on the cover slide can lead to a 10 percent power loss, and this is a problem. This puts additional stress on the laser machine and in the long term it will have detrimental effects and may cause the other components in the machine to fail.
We can supply and replace optics in damaged laser focusing heads. We can also custom design laser focusing heads according to application and space availability.
Send in a picture or email us on the parts that require replacement and we will be please to provide the estimate cost of repair. As part of our quality assurance, all laser focusing heads are refitted, ie damaged optics replaced, cleaned and tested before returning them to our customer.
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