18mm ZnSe Lens 2″(50.8mm)FL

Improve your machine’s performance with this high quality replacement ZnSe Lens.

This is 18mm size with 50.8mm focal length.  If you have upgraded your machine with an air assist head, this is probably what you need.  This will not fit the K40 with the stock head!  Please measure the old lens or lens holder before ordering!

A laser cutter will typically contain 3 mirrors and 1 focus lens.

This contains 1 lens.

Here’s what you need in order to do a full optics replacement/ upgrade:

3 * 20mm Mirrors:  Molybdenum (MO) Mirror – 20 MM – for K40 Laser

AND

1 * 12mm Lens if you have the stock K40 head: ZnSe Lens – 12mm – for K40 Laser with Stock Head

OR POSSIBLY (MEASURE YOUR LENS/ LENS HOLDER!)

1 * 18mm Lens if you have an upgraded head like the LightObject Air Assist: ZnSe Lens – 18mm – for K40 with Some Upgraded Heads