Another one 2W red module (4x 638nm mitsu)

[m0f]

Good to know I did sand mine down a bit to flatten them out, but also used an extra bounce so not so critical. Definitely ended up with a much bigger module though as a result.

[Bbe]

If it use 5mm retainers for FL lenses, then can reduce the module size even more

[andy_con]

I go for 1.8mm height difference

[Bbe]

I have found that different instances of the diodes/lens have different dimensions of the beam profile. When I was experimenting with the height difference, I had a beams overlaping with a 1.8 mm displacement and loss of power in the end.

[Bbe]

Pre christmas laser design. Santa said that the need to change everything
Now this module with a spatial filter!



The only question torments me - external or internal driver?

[badger1666]

Hey bbe what lens set did you use for spatial filter ?

[Fearless]

Drivers put out a lot of heat, I would do it externally.

[Bbe]

Badger, I'll use something like EO 63-500, I'm experimenting with it now

Hey bbe what lens set did you use for spatial filter ?

My driver has about 85% efficiency and heating can be neglected. The question is what would be easier to use...

Drivers put out a lot of heat, I would do it externally.

[bolo]

BBe, I buildt next module- maybe now will be wrk fine
From my nitice I have 16mm betwen cylinder lens, and about 40mm betwen diode lens and first cylinder- you have similar?
Spot at aperture 3x2mm. At 5m distance 6x3,5mm (it's from one diode only)

[Bbe]

Bolo, i have 19.6mm between telescope lenses (from back to back) and 33mm from diode retainer front side to first cylinder back side. Beam at aperture is 1.9x3.8mm (for one diode)