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About different lens: laser beam spot, focal range.

About different lens: laser beam spot, focal range.

Get the best focus for your laser using mirror camera.

How does the laser beam focusing works?!

Laser beam focusing - how does it work

Comparing a different lens: 2 types of 3 element lens (black), G2 lens (golden), G7 lens (golding with a bigger glass)

Test one – regular 3 element lens

Focal range: 63-67 mm from the aluminum housing to the surface
Laser beam spot size: 85×130 microns (uM) (highest laser power density)

Original images

 

Test two – regular 3 element lens (longer version)

Focal range: 63-67 mm from the aluminum housing to the surface
Laser beam spot size: 85×130 microns (uM) (highest laser power density)

About different lens: laser beam spot, focal range.
Good focus

About different lens: laser beam spot, focal range.

 

Test three – G2 lens

Focal range: 32-33mm from the aluminum housing to the surface
Laser beam spot size: 65×130 microns (uM) (highest laser power density)

Original images

 

Test fourth- G7 lens

Focal range: 83-85 mm from the aluminum housing to the surface
Laser beam spot size: 85×130 microns (uM) (highest laser power density)

Original images

Interesting laser beam calculator

Focal range laser lens test. laser lens tests (PDF). Testing lens from different optical producers.

Improved laser beam quality

Laser beam spot improvement for 445 nm diode laser (success – new laser beam spot)

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