The premium quality 1 1/2" focal length lens for Speedy 100 machines is commonly used for high resolution engraving, as well as printing small fonts and very fine detailed works.  In comparison to the most commonly used lens, the two inch lens, the 1 1/2" lens is about 40% smaller in size.  Another use is for cutting very thin materials, less than a sixteenth of an inch.  The concentrated power of the smaller spot size (increased energy density) enables cutting of very thin metals, when paired with the smaller orifice nozzle.  Note, that the 1 1/2" lens is not widely used for engraving because the focus range is very sensitive, and thus a slight change in height will significantly change the spot size. So, as materials and laser tables are subject to height variations, especially when the surface for engraving is larger, the applications for the 1 1/2" lens tend to be dimensionally smaller works.

1.5" Focus Lens for Rayjet Laser Engraving Machines by Mahoney. Features Premium Grade Focus Lens.Low price, good quality. Why pay excessive prices? Premium grade lens. Save a bundle.Features the premium grade focus lens. Great for most detailed laser engraving work. See our other listings for the premium grade focus lens.Includes the lens.Fast installation. Simply remove the old lens and insert this lens. Nothing could be faster!Indepth Product InformationClick for whiteboard presentation for recommendations of various lens focal lengths under different conditions.Click for Synrad's "How to choose the right lens focal length for your application.