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May 2011

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Subject:
From:
Leland Woodall <[log in to unmask]>
Reply To:
TechNet E-Mail Forum <[log in to unmask]>, Leland Woodall <[log in to unmask]>
Date:
Mon, 16 May 2011 11:50:48 -0400
Content-Type:
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Richard,

Do your operators find the lighting adequate?  The lux rating of these
units are a little low compared to others I've been investigating.

Leland

-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of Stadem, Richard D.
Sent: Monday, May 16, 2011 8:10 AM
To: [log in to unmask]
Subject: Re: [TN] LED Microscope Ring Illuminators

Here is the link that I used to purchase first one (from Japan), then 5
more. I took a chance, but they turned out to be a legit company, so
far.
http://cgi.ebay.com/144-LED-Ring-Light-Illuminator-Microscope-4-Zone-Cam
era-/170635889874?pt=LH_DefaultDomain_0&hash=item27bab10cd2





-----Original Message-----
From: Frederick Miller [mailto:[log in to unmask]]
Sent: Monday, May 09, 2011 1:01 PM
To: Stadem, Richard D.
Subject: RE: [TN] LED Microscope Ring Illuminators

Hi Richard,
I would like to try the 144 LED unit you talk about. Who do you
recommend I order from?
Regards

Frederick H. Miller, P.E.
Astrolab, Inc.
4 Powder Horn Drive
Warren, NJ 07059
Tel: 732-560-3800
Fax: 732-560-9570
www.astrolab.com
[log in to unmask]


-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of Stadem, Richard D.
Sent: Monday, May 09, 2011 1:29 PM
To: [log in to unmask]
Subject: Re: [TN] LED Microscope Ring Illuminators

I use one on my own scope in the process development lab, and I love it.
I bought some for certain inspectors who use them all day long, now
everybody wants one.
Not only is there less heat, but they don't have a large power supply
light source hogging a lot of space on the workstation. Those halogen
lamps are both hot and expensive also.
You can purchase LED ring lights relatively cheap online. I only paid
$90 for mine, took a chance and bought just one, and it has been working
well for a year now, no problems. I use mine sporadically, the
inspector's are the same as mine but have been in production 20 hours
per day, 5 days a week for almost 8 months, no problems. Mine is a
144-lite LED ringlight. We tried 60-LED and 90-LED ringlights and they
were not quite bright enough. You can buy slightly more expensive
180-LED ringlights, although they are too bright on their highest
settings, and you get complete washout. You can pay a lot more for
certain brands of LED ringlights (up to $500 or more), but when we
compared them they were essentially the same in terms of light output as
the $90-$125 models with 144-180 LEDs. However, I have only had one for
slightly longer than one year. Perhaps it may not last as long as the
more expensive models. Another option on the $90 unit we use is that you
can shut off any of the quadrants in order to better see certain images
without glare. That is a truly handy option.

-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of Steve Gregory
Sent: Monday, May 09, 2011 11:17 AM
To: [log in to unmask]
Subject: [TN] LED Microscope Ring Illuminators

Hi All,

 

Do any of you use LED microscope ring illuminators? Good or bad? 

 

I know it's a cooler temperature light than halogen illuminators, but I
like
what they claim life of the LED's are, 50,000 hours vs. 1,000 hours for
a
halogen lamp.

 

I've never had the chance to use one, and I'd be interested in what you
think of them.

 

Thanks,

 

Steve

 

 



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