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Old 09-21-2010, 03:25 PM #17
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Default Re: Huge 445nm beam

There were also many lenses initially sent out in the fully threaded body that appeared to either be clearly a wrong colour AR coating or some elements coated correctly and some not. This only helps to muddy the waters I guess.

Individual testing would be the only way wouldn't it? How much a measureable output through the lens would be different with the 405nm or the broadband coating I am not sure but wouldn't the actual reflected output from the backside of the lens have to be the one that's measured? That can't be easy to replicate for a 3 element lens, on this scale, and at home can it?

M


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Old 09-21-2010, 03:47 PM #18
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Default Re: Huge 445nm beam

Measuring the reflected power would be very difficult indeed. You can obviously measure the output power, but that doesnt tell the lenses apart unless you have both of them, so its still tricky. I wish they'd just stamp 405/445/660 somewhere on the metal.
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Old 09-21-2010, 04:02 PM #19
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Default Re: Huge 445nm beam

That would be the way to go. It'd have to be tiny print. Although if they're made in China then the small lettering should be no problem for the kids employed to assemble them! J/K

M
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Old 09-21-2010, 05:46 PM #20
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Default Re: Huge 445nm beam

Hehe.. come to think of that, i wonder if they have any idea what they are making and what it is used for. The mysteries of chinese production...
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Old 09-21-2010, 06:52 PM #21
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Default Re: Huge 445nm beam

Binoculars for ninja mice?

They don't need to know Ben. They just don't need to know!

M
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Do you want to build a laser? But, you know nothing about what is needed, right? Then you need to try the, "I Want to Build a Laser", thread! Everything you wanted to know to get started and more! An easy guide as to what you need and why!

Another good guide can be found here from goninanbl00d - "First Build Guide"
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" ... Lasing on a sunny afternoon." The Kinks.

"Lasing on a Sunday Afternoon." Queen.

" Lase-y Sunday afternoon, I've got no mind to worry... " Small Faces.

"... Yes. It died during the night... So I cooked it! It was very nice." My Dad

Assembly services, parts machined and consultations for specialist builds available. PM me if you need something. Thanks.
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