Anyone try one of these LED setups?

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microb
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Anyone try one of these LED setups?

#1 Post by microb » Wed Dec 09, 2020 7:46 pm

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wstenberg
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Re: Anyone try one of these LED setups?

#2 Post by wstenberg » Sat Feb 20, 2021 5:58 am

I can think of a few applications. I wonder if it's any good?
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hans
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Re: Anyone try one of these LED setups?

#3 Post by hans » Sat Feb 20, 2021 6:16 am

I bought a few things from that seller (the WF10X/22 eyepieces Scarodactyl reviewed, calibration slide, some reticles) and the quality seemed fine.

microb
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Re: Anyone try one of these LED setups?

#4 Post by microb » Sat Feb 20, 2021 6:26 am

hans wrote:
Sat Feb 20, 2021 6:16 am
I bought a few things from that seller (the WF10X/22 eyepieces Scarodactyl reviewed, calibration slide, some reticles) and the quality seemed fine.
I have that light source now. I'm just trying to figure out the best way to test it.

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Rossf
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Re: Anyone try one of these LED setups?

#5 Post by Rossf » Mon Jul 05, 2021 2:13 am

Hey microb did you find this lighting device useful?
Regards ross

microb
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Re: Anyone try one of these LED setups?

#6 Post by microb » Mon Jul 05, 2021 6:42 pm

Rossf wrote:
Mon Jul 05, 2021 2:13 am
Hey microb did you find this lighting device useful?
Regards ross
I sent a message just now to hans who said they'd test one.

I don't know if it is bright enough. But might be fine for a small student scope, not sure though.

A flashlight is way brighter. But I like the form factor and if I can, I'll see if I can mount it on some small Unitron inverteds that I have that I want to sell.
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hans
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Re: Anyone try one of these LED setups?

#7 Post by hans » Mon Jul 05, 2021 9:08 pm

microb wrote:
Mon Jul 05, 2021 6:42 pm
I sent a message just now to hans who said they'd test one.
Sorry for confusion, I didn't buy one of the LED illuminators, was just saying I had bought several other things from the same seller and quality seemed decent.

apochronaut
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Re: Anyone try one of these LED setups?

#8 Post by apochronaut » Mon Jul 05, 2021 9:48 pm

Those are for retrofitting into coaxial illuminators. The way they are, the light is allowed to disperse. In a coaxial illuminator it is focused and concentrated.
They are 5 watt. That's not an insignificant led wattage.

Dubious
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Re: Anyone try one of these LED setups?

#9 Post by Dubious » Mon Jul 05, 2021 9:58 pm

Another source for LED kits, with more options, is ledsupply.com. Their 5w kit is as low as $25, depending on which led and driver you choose:

https://www.ledsupply.com/led-kits/5-wa ... module-kit

They also have 10w kits, or you can buy the led and driver separately--they carry the main ones. Looks like they may also have someone knowledgeable willing to talk to you about your needs, although I haven't tested that yet.

DonSchaeffer
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Re: Anyone try one of these LED setups?

#10 Post by DonSchaeffer » Thu Jul 08, 2021 1:46 pm

I Have the first one. I find it not all that bright.

microb
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Re: Anyone try one of these LED setups?

#11 Post by microb » Sun Aug 08, 2021 8:00 pm

So I tested the LED lamp on an AX70 using an LGAD adapter -- reflectance only. Have not tried transmittance.

It fits in, but needs to go in further to make the aperture and field stops work correctly by properly lining up the conjugate planes.
Intensity surprisingly is not an issue. The real issue is a very faint strobe that shows. It’s nothing as bad as LED PWM controllers from a few years back, but there still is a slight strobe. When doing cross polarization which really lowers the light levels, the LED works even at half levels. But the problem is that slight strobe (which happens in a constant matter no matter the LED level. So low levels do not strobe more like older controllers) the cross-polarization dots that are in focus are noiser.

If I’m selling a microscope frame, I might include this as a low quality tester that someone can get the system up and running and verify things are OK. They can then upgrade latter.
The color is redder than a mercury lamp. But it works. I think I’m going to try to light mix multiple LEDs into a fiber and use constant current power. This unit is probably using constant voltage which are typically cheaper LED controllers. Hopefully a better controller will hide the faint strobe.
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Greg Howald
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Re: Anyone try one of these LED setups?

#12 Post by Greg Howald » Mon Aug 09, 2021 5:59 am

Looks interesting. Makes me wonder how it might work as the top light on my metallurgical scope.

microb
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Re: Anyone try one of these LED setups?

#13 Post by microb » Mon Aug 09, 2021 5:15 pm

Greg Howald wrote:
Mon Aug 09, 2021 5:59 am
Looks interesting. Makes me wonder how it might work as the top light on my metallurgical scope.
I might try it with some mini-inverted Unitrons I'm going to sell.

EYE C U
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Re: Anyone try one of these LED setups?

#14 Post by EYE C U » Wed Aug 11, 2021 4:10 pm

RECHARGEABLE FLASHLIGHT ;-)
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