FS: 405-G-1 Glass Lens Mod - 31% Increase vs AixiZ!

Re: FS: 405-G-1 Glass Lens Mod-28% Increase vs Aix

well that's good to hear im ordering me 10 of them on monday cant wait for more info

Re: FS: 405-G-1 Glass Lens Mod-28% Increase vs Aix

Thanks for the explanation Dave, so really with the glass lens here, we are seeing the true output of the laser that hasn't been artificially 'cut off' to reduce splatter like the AixiZ acrylics.    Interesting about the greens, I always wondered why the dot was so perfectly round    No wonder those things heat up so much (along with the IR high powered diode) because so much of the light is being trapped inside the host.  

And no, I have never seen a Meridith lens in action, nor have a seen a acrylic with the backside modified.  

BTW, previous post removed due to respect for Jay.  Sorry Jay!  :-[

Re: FS: 405-G-1 Glass Lens Mod-28% Increase vs Aix

When I sent IgorT his first Merideth module (after he complained about how "ugly" the Version #1 lens was) he was shocked that we would accept such ugly beam spec's ;D I wish I had taken a good picture of the "look" of the spot with a Merideth. It is less than "pure."

Peace,
dave

Re: FS: 405-G-1 Glass Lens Mod-28% Increase vs Aix

leukoplast, I respect your opinion man...

But we all accept various types of imperfection with any lens. As rkcstr said, it is more that worth the 'splash' to get the much higher power and better beam.

I don't like how the AixiZ acrylic shows two large spots way out wide with a blu-ray in the dark. But it doesn't bother me enough to stop using the lens.

But to each his own...
Jay

Re: FS: 405-G-1 Glass Lens Mod-28% Increase vs Aix

jayrob said:

I know I already mentioned it, but I think this diode is the same as your 8X Dave!
Jay

Click to expand...

THAT would be very cool.
Peace,
dave

[highlight]**EDIT** [/highlight]Drlava estimated that the flexdrive could handle it up to around 300mA

Re: FS: 405-G-1 Glass Lens Mod-28% Increase vs Aix

Green lasrs actually have a perfectly round beam straight out of the pump medium. As long as the crystal set is not shifting out of mode. If you have an old green pointer you want to experiment with, remove the expander and view the beam without any optics. Straight out of the crystals, the beam is perfectly round, but will diverge rapidly. The additional optics are used to correct the divergence, or you would have a 6 inch dot at 10 feet away, but absolutely no noise surrounding the dot.



Edit* This is a pic of and old set I was playing with, but gives an idea of beam shape and rapid divergence.

Re: FS: 405-G-1 Glass Lens Mod-28% Increase vs Aix

leukoplast said:

BTW, previous post removed due to respect for Jay.  Sorry Jay!  :-[

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WTF I just gave you a point for an honest review and you pulled it. There is good and bad with everything. I personally want to know both, and I'm sure others do too. Its not personal, its the truth. So much for unbiased reviews.

I want my point back

Re: FS: 405-G-1 Glass Lens Mod-28% Increase vs Aix

I fully agree. Instead of joining the "ain't it wonderful" chorus, it would be more productive to find out just why the image is so bad. For example, how much of it is caused by the lens not being perpendicular to the laser spot, and/or not centered?

Re: FS: 405-G-1 Glass Lens Mod-28% Increase vs Aix

WannaBurn said:

Green lasrs actually have a perfectly round beam straight out of the pump medium. As long as the crystal set is not shifting out of mode. If you have an old green pointer you want to experiment with, remove the expander and view the beam without any optics. Straight out of the crystals, the beam is perfectly round, but will diverge rapidly. The additional optics are used to correct the divergence, or you would have a 6 inch dot at 10 feet away, but absolutely no noise surrounding the dot.

Edit* This is a pic of and old set I was playing with, but gives an idea of beam shape and rapid divergence.

Click to expand...

And then the beam hits the lens and some is reflected back and bounces around the housing and enters the lens at variable angles and noise is introduced.

Peace,
dave

Re: FS: 405-G-1 Glass Lens Mod-28% Increase vs Aix

Noise from light reflected on the glass-air interface would certainly amount to much less than 1%.

Re: FS: 405-G-1 Glass Lens Mod-28% Increase vs Aix

That picture is awesome!!

Re: FS: 405-G-1 Glass Lens Mod-28% Increase vs Aix

dr-ebert said:

Noise from light reflected on the glass-air interface would certainly amount to much less than 1%.

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And then the light exits the lens and, in a pointer or hand held unit, reflects off of the aperture and housing once again and an increase in noise is introduced.

Even with theoretical perfection in lens quality, cleanliness, and alignment, you are going to be introducing enough "noise" (especially in a pointer or hand held laser) that it will be noticeable, and measurable.  

Finally, although I agree with the statement that the picture is awesome, you will no doubt notice that the light from both the pump diode and the output beam can be seen on other surfaces. Even in the free air environment, reflection is an issue

Peace,
dave

Re: FS: 405-G-1 Glass Lens Mod-28% Increase vs Aix

dr-ebert said:

I fully agree. [highlight]Instead of joining the "ain't it wonderful" chorus, it would be more productive to find out just why the image is so bad.[/highlight] For example, how much of it is caused by the lens not being perpendicular to the laser spot, and/or not centered?

Click to expand...

I have messaged and e-mailed Igor long ago about this lens. I would love to have his comparison with his best glass lens. He has not responded??

I was impressed with the results, and others are as well...

I welcome all information. I would like to know more too. And if there is a better lens, by all means. Tell me where I can buy it!

I have posted the e-bay link to the bare lens at the top of the thread. I'm sure there are several who are testing this lens...
Jay

Re: FS: 405-G-1 Glass Lens Mod-28% Increase vs Aix

Tech_Junkie said:

[quote author=leukoplast link=1237515270/32#33 date=1237659924]BTW, previous post removed due to respect for Jay.  Sorry Jay!  :-[

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WTF I just gave you a point for an honest review and you pulled it. There is good and bad with everything. I personally want to know both, and I'm sure others do too. Its not personal, its the truth. So much for unbiased reviews.

I want my point back [/quote]

Sorry, as said in the PM I didn't realize you gave me rep for that post. But what I wrote was out of line, and what I was complaining about was already shown in a picture on the first page (very good illustration of what it looks like BTW). I deleted the post because I figured it was unnecessary to post such harsh words when I really have no idea what I am talking about in the first place. And it was very disrespectful of me (IMO).

Re: FS: 405-G-1 Glass Lens Mod-28% Increase vs Aix

leukoplast said:

[quote author=Tech_Junkie link=1237515270/32#38 date=1237660885][quote author=leukoplast link=1237515270/32#33 date=1237659924]BTW, previous post removed due to respect for Jay.  Sorry Jay!  :-[

Click to expand...

WTF I just gave you a point for an honest review and you pulled it. There is good and bad with everything. I personally want to know both, and I'm sure others do too. Its not personal, its the truth. So much for unbiased reviews.

I want my point back [/quote]

Sorry, as said in the PM I didn't realize you gave me rep for that post.  But what I wrote was out of line, and what I was complaining about was already shown in a picture on the first page (very good illustration of what it looks like BTW).   I deleted the post because I figured it was unnecessary to post such harsh words when I really have no idea what I am talking about in the first place.   And it was very disrespectful of me (IMO).  [/quote]
So much for PM's...
I didn't think it was out of line at all. You didn't like it and you gave an honest report on why. Truth is truth. You didn't attack him, you gave honest reasons why you didn't like it, and there is no disrespect in that. I was impressed by post and if nothing else it reinforced Rkcstr's review. You did nothing wrong and you obviously lost some respect from others for pulling your post. There are to many kiss asses on this forum, we don't need any more.

Re: FS: 405-G-1 Glass Lens Mod-28% Increase vs Aix

Tech_Junkie said:

There are to many kiss asses on this forum . . . . . .  

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. . .and too many asses to kiss to keep track of.

Be honest. Move on

Peace,
dave