Anyone try one of these LED setups?
Anyone try one of these LED setups?
Has anyone tried these? https://www.ebay.com/itm/Coaxial-Point- ... 4551889356
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Re: Anyone try one of these LED setups?
I can think of a few applications. I wonder if it's any good?
William
Astoria, Oregon
Zeiss Axiomat
Zeiss Stereomikroskop
Zeiss Tessovar
Astoria, Oregon
Zeiss Axiomat
Zeiss Stereomikroskop
Zeiss Tessovar
Re: Anyone try one of these LED setups?
I bought a few things from that seller (the WF10X/22 eyepieces Scarodactyl reviewed, calibration slide, some reticles) and the quality seemed fine.
Re: Anyone try one of these LED setups?
Hey microb did you find this lighting device useful?
Regards ross
Regards ross
Re: Anyone try one of these LED setups?
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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Re: Anyone try one of these LED setups?
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.
They are 5 watt. That's not an insignificant led wattage.
Re: Anyone try one of these LED setups?
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.
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.
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Re: Anyone try one of these LED setups?
I Have the first one. I find it not all that bright.
Re: Anyone try one of these LED setups?
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.
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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Last edited by microb on Mon Aug 09, 2021 5:15 pm, edited 1 time in total.
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Re: Anyone try one of these LED setups?
Looks interesting. Makes me wonder how it might work as the top light on my metallurgical scope.
Re: Anyone try one of these LED setups?
I might try it with some mini-inverted Unitrons I'm going to sell.Greg Howald wrote: ↑Mon Aug 09, 2021 5:59 amLooks interesting. Makes me wonder how it might work as the top light on my metallurgical scope.
Re: Anyone try one of these LED setups?
RECHARGEABLE FLASHLIGHT