K40 Lens Specifcations, Orientation & Cleaning

Background

Some links that pertain to K40 lenses

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For other information on the K40-S build use the  K40-S BUILD INDEX with schematics

Lens focus, orientation & cleaning:

CURVED SIDE UP, FLAT SIDE DOWN

https://www.eurolaser.com/customer-service/faq/cleaning-the-focal-lens/

https://www.youtube.com/watch?v=v0znprj3xsw

https://youtu.be/j-b3pomqKkI

https://youtu.be/1yMAr75h5O8

http://www.parallax-tech.com/faq.htm#tem

http://www.rpgroup.caltech.edu/courses/aph162/2007/Protocols/Optics/e3613_Focusing-and-Collimating.pdf

Lens Application Vs Focal Length:

From Epilog
From Trotec

From Engravers Network

1.5-inch lens

• Optional lens for high resolution engraving.
• Recommended for raster engraving above 600 DPI resolutions.
• Recommended for small font or fine detail engraving.
• Produces spot size of 0.003 to 0.0065 inches in diameter.
• Good cutting lens for thin (less than 1/16 inch) material.

2-inch lens

• Standard lens on most laser systems.
• Multipurpose for both engraving and cutting applications.
• Recommended for raster engraving from 300 DPI to 600 DPI resolutions.
• Produces spot size of 0.004 to 0.007 inches in diameter.

4-inch lens

• Produces focused beam over longer vertical distance
• Specialty lens typically used for engraving within recessed area (bowl or plate).
• Used for cutting thick materials.

Enjoy and comment
Maker Don