AixiZ 445nm lens...

[DTR]

Update to this: I received 4 of these and it just happened that the one I opened & used was plastic barrel, glass lens. However since I started this thread, I opened the other 3 and they are diffidently black metal barrel, you almost can't tell them apart. I asked AixiZ and they will swap out the plastic one for a metal one, no problem.

Does this lens make the dot less elongated at distance or remove any of the halo of the 405 glass?

 

[Eudaimonium]

Oh my , this is very discouraging...

Basically, for anything less than 0.5W , glass lens are a waste of $9.50 because plastic ones have barely measureable difference.
Problem is at higher powers where plastic would melt...

Disturbing news. We're at the end better off with stock projector lens LOL
Jay , did you recieve yours? Any measurements?

 

[jayrob]

No not yet... I was told today that 70 of my order are shipping today...

But if the entry aperture is only 4.7mm's, that explains the difference in power.

The AixiZ glass lenses have an entry aperture of 5.18mm's. I'll have to check this out and maybe even swap out the tiny retaining nut for a larger entry aperture to test it...

 

[ElektroFreak]

wow, plastic and only a slight improvement over their 405nm glass lense, i kinda expected a bit more

Given that their glass 405nm lenses will be quite similarly coated to a "445nm optimized" lens since they are only 40nm apart I would think that only very slight gains are all that is possible..

 

[Eudaimonium]

No not yet... I was told today that 70 of my order are shipping today...

But if the entry aperture is only 4.7mm's, that explains the difference in power.

The AixiZ glass lenses have an entry aperture of 5.18mm's. I'll have to check this out and maybe even swap out the tiny retaining nut for a larger entry aperture to test it...

Why oh why would they make a smaller aperture?! What is the logical explanation for this? Roundness of the dot , or what?

I simply don't get it.

Well, we can always expand it, as you said it.

 

[ElektroFreak]

electron;

That is very disappointing to hear.

Only a 2% power increase over the cheap ~ 50 cent plastic lens.

Three glass elements detracts from power output.

As I always say, maximum power output is but a tiny fraction of a lens' function. Three elements give a FAR superior beam profile and lower divergence than any single-element lens that I've seen in person or anywhere.

The plastic threads are also a bad idea.

Agreed, but no different from the acrylics.

They will get sloppy very quickly, making focusing difficult.

With Aixiz modules even the metal threads are not properly tight fitting unless PTFE tape is used.

Thanks for warning other LPF members.

What is the factory thinking ??

LarryDFW

I'm not convinced that these will be as bad as everyone seems to be thinking here in this thread.. I should have a test example waiting for me at home.. hopefully it's not plastic, and hopefully it gives me the kind of low divergence and clean beam profile that my 405nm Aixiz glass lenses do. I'm one of those guys who could give a flying you-know-what about burning ability.

Also, I believe that 4.7mm is exceedingly close to the same entry aperture as the original Aixiz glass lens, but I'm at work so not 110% sure..

4K

 

[DjHeadie]

I'm one of those guys who could give a flying you-know-what about burning ability.

i like the cut of your jib!

 

[lazeerer]

Here is a pic from 6 Feet Unfocused.

 

[jib77]

I also got mine today ... I measure 5.07mm on the entrance aperture:

 

[Jim]

@Lazeerer, It looks to be quite "clipped", to round up the dot at longer distances?

 

[electron]

OK, so I replaced the batteries in my Micrometer and reset it, then measured a known diameter and here is what I now get;

Regular Glass Lens half threaded 4.90mm entry aperture

Acrylic Lens 4.80mm entry aperture
This one just came from JayRob today; so if it's not the same Jayrob as you measure, then it is simply a matter our micrometers don't match.


New 445nm Glass Lens fully threaded 4.95mm entry aperture


Does all this make more sense now?

 

[Elektrotechniker]

445 lens? Did I miss something?

 

[ElektroFreak]

Ok. So here's my take.

I ran out of 405nm glass lenses awhile back, so i decided to try out one of Aixiz' glass lenses for red. The beam is pretty clean but there is a bit of power loss since the lens is intended for red.

I received a new "445nm optimized" lens from Aixiz today. The results are IDENTICAL to my previously described red lens right down to the power output. IDENTICAL . It seems that they sent me a red-coated lens as a "445nm optimized" lens. NOT TOO HAPPY..

 

[electron]

Wow, this isn't getter any better.

 

[wicked1]

Got mine today, too.
metal body.

the AR coating on the lens reflects/looks blue... The coating for red also reflects blue. I'm making a barely educated guess, but shouldn't the coating for blue look sort of redish rather than blueish, as it should be passing blue and reflecting other colors?

Also, the instruction sheet that came with it simply says "optimized 3 element glass lens for high power applications", but makes no mention of nm.

I don't have a power meter, so have no reason to question it. I'm just adding my observations.

 

[Giface]

Got mine today, too.
metal body.

the AR coating on the lens reflects/looks blue... The coating for red also reflects blue. I'm making a barely educated guess, but shouldn't the coating for blue look sort of redish rather than blueish, as it should be passing blue and reflecting other colors?

I would agree with you.

The old Aixiz 405s reflects/looks reddish-yellow under sunlight.

I would think that they would have tested these before sending them out - what's going on?

Dave