Mitsubishi ML520G71...Red Holy Grail or Flashlight Fail ??

[andyf97]

2mm, in my last post I marked it wrong, after the first lens its smaller. I will measure everything up better in a bit because I want to also try some other lens combination for stacking .

[drlava]

Andyf, you should study the losses you are getting with the olike vs the 405-g-2. It's easy to miss the fact that with the aixiz/olike long focal length lens you'll get significant fast-axis beam clipping. So although a long focal length collimators helps decrease divergence, you quickly run into other issues and the whole picture must be accounted for.

[catalanjo]

This is starting to look very very interesting ....

Cheers

[andyf97]

DrLava, Yes I know but not using either lens now as they are way off compared to the newer results.

Of course losses are important too... but no point even starting to measure until the beam is great.

[steve-o]

Wow, nice going you-all! I was going to settle for "good-enough", because these diodes are cheap and plentiful (like the 445s) . Yeah, I agree, some losses are ok, if the beam is decent. Cheers and nice work! Woo-Hoot !!!! :]

[planters]

This is moving very fast. So the initial collimator lens is...? RE the loss issue; the beam is already great. It exceeds all the other direct diode beams available at any wavelength. This is why I am still skeptical and why we need the prescription of the new lens so others can verify these divergence results as well as look at issues such as loss,cost etc.

[andyf97]

Here you go girls and boys.
1
Attachment 28014

2
Attachment 28015

3
Attachment 28016

4
Attachment 28017

5
Attachment 28018

6
Attachment 28019

7
Attachment 28020

8
Attachment 28021

9
Attachment 28022

10
Attachment 28023

11
Attachment 28024

12
Attachment 28025


Added numbers for reference.

Image 7 & 12 show the dimensions of the beam, this is after the little lens without any correction..and its tiny.

My little mount is not perfectly aligning the lens in the center so am getting a little scattering.

The spot on the tree is around 30 meters away and shimmering like a great laser should so this means its in focus..

AND, I am going to get this better.

[andyf97]

and the little lens Attachment 28026

[badger1666]

and the little lens Attachment 28026

looking good andy
we await the info on what the lens are ? and where to get them ? please especialy that first collimator your using

[steve-o]

.. and the suspense builds ...........