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Old 01-26-2009, 10:30 PM #785
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Default Re: 405nm AR glass lenses - fit AixiZ *FEELER

I'll take one that is best suited for Violet & red lasers.


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Old 01-27-2009, 12:48 AM #786
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Default Re: 405nm AR glass lenses - fit AixiZ *FEELER

Is anyone reading this thread? There's only going to be one lens, optimized for 405nm, but still have a power increase for red lasers.
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Old 01-27-2009, 01:27 AM #787
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Default Re: 405nm AR glass lenses - fit AixiZ *FEELER

I am in for 2 lenses for my new lasers (shipping soon, I hope!).
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Old 01-27-2009, 02:04 AM #788
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Default Re: 405nm AR glass lenses - fit AixiZ *FEELER

im in for 2 as well.
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Old 01-28-2009, 06:11 PM #789
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Default Re: 405nm AR glass lenses - fit AixiZ *FEELER

Quote:
Originally Posted by Tech_Junkie
Someone who would go through extreme expense and time to do this and is kind enough to share with the group is very rare.
Agreed...I am in for one lens total, but only if the price is at least enough to make Igor comfortable and let him keep as many as he wants. thanks IgorT!!!


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Old 01-29-2009, 02:01 AM #790
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Default Re: 405nm AR glass lenses - fit AixiZ *FEELER

sheesh - pages and pages of people posting their desire to buy something, they don't know exactly what...
man, I've got to figure out something to put up for sale here!
;D
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Old 01-29-2009, 04:20 AM #791
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Default Re: 405nm AR glass lenses - fit AixiZ *FEELER

Quote:
Originally Posted by 919jack
[quote author=Tech_Junkie link=1212842385/760#769 date=1232499491]Someone who would go through extreme expense and time to do this and is kind enough to share with the group is very rare.
Agreed...I am in for one lens total, but only if the price is at least enough to make Igor comfortable and let him keep as many as he wants. *thanks IgorT!!!


[/quote]

I'm with you there 919jack! Oh, except I MUST have at least 2 lenses! LOL! -Glenn
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Old 01-29-2009, 07:56 PM #792
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Default Re: 405nm AR glass lenses - fit AixiZ  FEELER

I'm still in for 3

8-)
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Old 01-29-2009, 08:15 PM #793
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Default Re: 405nm AR glass lenses - fit AixiZ *FEELER

Quote:
Originally Posted by Jimmymcjimthejim
Is anyone reading this thread? There's only going to be one lens...
Like the thread's over 40 pages long... but seeing as IgorT has the [great] habit of updating the op, no, I didn't note this &quot;final&quot; decision...

What I did see was this:
Quote:
Originally Posted by IgorT
Please also post the type of coating you would want if the lens turns out well: 405nm OR Multilayer (for all laser wavelengths)...
The coatings are done at the end of the manufacturing process, so we can order whatever combination we want.
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Old 01-31-2009, 03:52 AM #794
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Default Re: 405nm AR glass lenses - fit AixiZ *FEELER

Quote:
Originally Posted by Traveller
[quote author=Jimmymcjimthejim link=1212842385/780#785 date=1233020927]Is anyone reading this thread? There's only going to be one lens...
Like the thread's over 40 pages long... but seeing as IgorT has the [great] habit of updating the op, no, I didn't note this &quot;final&quot; decision...

What I did see was this:
Quote:
Originally Posted by IgorT
Please also post the type of coating you would want if the lens turns out well: 405nm OR Multilayer (for all laser wavelengths)...
The coatings are done at the end of the manufacturing process, so we can order whatever combination we want.
[/quote]
Oh, well, I really wasn't trying to be offensive. But like with other group buys, I generally read the last few pages (at least) before jumping to conclusions.
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Old 01-31-2009, 04:25 AM #795
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Default Re: 405nm AR glass lenses - fit AixiZ *FEELER

Hey i might take one, depends on how long it takes to get them and when the payment is due. *:P
Edit: the 405 nm ones.
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Old 01-31-2009, 08:26 PM #796
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Default Re: 405nm AR glass lenses - fit AixiZ *FEELER

I would like to be part of the long list - since my first 405nm one, I've always desired more and more power!
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Old 01-31-2009, 10:16 PM #797
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Default Re: 405nm AR glass lenses - fit AixiZ *FEELER

Quote:
Originally Posted by Traveller
... I'm not really sure anymore if you are going to choose one or the other...
Okay... now I'm up to speed, or at least mostly up to speed. I'll up my order to four (4) of the lenses*. Since you stated that these lenses would only be available via group buys, better safe than sorry *:P

*The lens being number 8 of the 9 tested (aka no. 2 of the &quot;final three&quot;, aka broadband, aka one bad-ass mofo, aka who else knows what). This based on what I read a, ah, &quot;few pages back&quot;...:



Just to clear one thing up. There won't be two types of coatings. We could afford two types with any of the first six lenses, but not with these. Luckily these have a broadband coating, which is very good at just around 405nm and 660nm. I did a comparison with a lens coated specifically for 405nm, and there is less than one percent of a difference, resulting from the difference in reflections.

So the broadband is more than just good enough, especially since as it is, the lens brings more of an increase than expected. When i thought the number would be under 20%, 0.8% more could bring it a bit closer.... But we are over 20% even for diodes with the lowest losses in acrylics.

And if one lens can do both, it's both cheaper, less complicated and more practical for everyone...

So we will have one universal lens instead of two. There is no need to specify the coating, because the best lens so far comes with a 400-700nm coating. Basically, everyone just needs to figure out how many they want. They will work with any visible wavelength diode, reducing reflections to less than 1% on average and even less with reds and blu rays...
--------------------------------------------------



It's been like this..
Manufacturer 1:
- v1 - the original custom lens, 30 pieces - FAIL - spherical abberations

Manufacturer 2:
- Doesn't even pick up the phone anymore unless caught off guard, in which case they say &quot;next week&quot;.

&quot;Manufacturer&quot; 3:
- v2 - first custom lens rescue attempt, 2 samples - FAIL - bubble gum lens?
- v3 - second rescue attempt, 2 samples - WORKS! Oh wait, no it doesn't? Wait, now it does? - FAIL - astigmatic lens/low quality


At this point i realized i was relying too much on too few manufacturers, and went nuts, and started searching for other options, by writing and calling more than ten new manufacturers.

I found:

&quot;Manufacturer&quot; 3's actual manufacturer:
- v4 - third resue attempt, one sample - FAIL - this is a lens? *:-/
- v5 - fourth rescue attempt, one sample *- FAIL - this was the first lens that was scratched before i got my hands on it, seems like it was made like this :-?
- v6 - fifth rescue attempt, one sample - FAIL - could almost work, has holes in the beam, quality too low


From the whole bunch v3 and v6 were the best, and yet they were horrible... *:'(
v1 was and still is the highest quality lens (precision machined lens), but it's spherical, and as such useless for us.
Here end the cheap lenses.

Luckily i also found:


Manufacturer 4:
- wanted to send representatives from France and Germany for a tour of my company, and to convince me to buy quality lenses at 68 EURO each for one piece and 40 EURO each for up to 500 pieces. They said we could talk about the price, once we get to larger quantities. They just didn't seem to understand that 250 pieces is a HUGE quantity for us... But i did get some usefull info.


Manufacturer 5:
- Lens #1 - WORKS!
- Lens #2 - WORKS even better!
- Lens #3 - increases the power the most, but has gaps in the beam - probably rejects from the high quality version. Not suitable for our needs, luckily this one was free. They were probably hoping that we don't need quality and that they could sell their rejects. The quality version costs twice as much as the first two of their lenses.


So we are now actually at lens 7-9, and v7 (Lens #1) &amp; v8 (Lens #2) are the best so far.... The latter increasing the power the most.

We will go with the 8th custom lens attempt, for max power and thinnest beam. But i am hoping i can also order some of the first lens, because it makes a &quot;cleaner&quot; spot, due to the medium NA clipping the ugly edges of the fast axis, and creates a &quot;fatter&quot; beam..

Lens #2 will bring out all there is, so the spot shape will depend ONLY on the diode output shape. It's the only way to get all the power out, and means, that diodes with a weird shape output will create weird shape spots... As diodes get better, so will the spots..

It is usual in pointers to go for a lossy option, such as clipping the output with a low NA of the lens, to make the spot rounder, cleaner and prettier.
- An AixiZ lens for example actually makes a pretty nice, rounded off spot, due to the low NA of 0.3...
- Lens #1 creates a flatter spot, but still with a slightly rounded off fast axis, because the NA is 0.4.
- Lens #2 has a NA of 0.55 and brings out the entire output and creates a spot in the same shape.
--------------------------------------------------



These [last three lens samples] are high quality precision grade aspherics. Unlike all the others, these were designed for laser diodes. They even have diode window thickness compensation! Other than collimating the beam, their shape also undistorts the spherical abberations caused by the diode window! These are diffraction limited lenses! Lenses where the size of the foused spot depends only on the wavelength! These are lenses, that could write a disk!
--------------------------------------------------



And finally, a nice synopsis:
NA
Lens #1: 0.40
Lens #2: 0.55
Lens #3: 0.60

FL
Lens #1: 6.30 mm
Lens #2: 4.56 mm
Lens #3: 4.02 mm

Coating
Lens#1: *405nm and 660nm
Lens #2: 405nm and 660nm
Lens #3: 408nm

Power Output Improvement (Based on a 6x diode and Aixiz acrylic lens)
Lens #1: +16.6 %
Lens #2: +24.2 %
Lens #3: * No Data

Power Output Improvement (Based on a high wavelength PHR diode and Aixiz acrylic lens)
Lens #1: +17.5 %
Lens #2: +26.0 %
Lens #3: +26.0 %

Focusing and Burning (Data still to be properly valuated)
Lens #1: *Good?
Lens #2: *Some focusing and burning - less than a long FL?
--------------------------------------------------

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Old 02-01-2009, 01:34 AM #798
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Default Re: 405nm AR glass lenses - fit AixiZ *FEELER

Thanks for that last post Traveller, very informative summary...I've read the whole 40 page thread but your post sure helped me out
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Old 02-01-2009, 01:54 AM #799
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Default Re: 405nm AR glass lenses - fit AixiZ *FEELER

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Originally Posted by 919jack
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Old 02-01-2009, 02:19 AM #800
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Default Re: 405nm AR glass lenses - fit AixiZ *FEELER

Nice going Igor, count me in for 1 - 2 depending on final price.
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