You bring up a good point, Lee.
Yes, they are quite bright at standard 3.5-20x magnification and 4.5" focal (working) distance. I am sure the focal distance, magnification and field of view of various microscopes would require more light than these put out. If my 57-year-old memory serves me correctly, I believe that a 1.5X magnifier on a scope reduces the light by more than 20%, or has the same effect.
Please note that the same company also makes brighter (188-LED) illuminators.
Please also note that this is being used at one of my consulting clients. However, GD has plans to evaluate these as well, for certain applications.
The consulting client uses them in the manufacture of hearing aid hybrids (.125"x.200"). I believe they use a 5-30X magnification scope with no reducers or magnifiers and the working distance is 3.5", so the field of view for that particular scope (and thus the amount of light seen) is probably larger.
-----Original Message-----
From: Leland Woodall [mailto:[log in to unmask]]
Sent: Monday, May 16, 2011 10:51 AM
To: TechNet E-Mail Forum; Stadem, Richard D.
Subject: RE: [TN] LED Microscope Ring Illuminators
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
______________________________________________________________________
This email has been scanned by the MessageLabs Email Security System.
For more information please contact helpdesk at x2960 or
[log in to unmask]
______________________________________________________________________
---------------------------------------------------
Technet Mail List provided as a service by IPC using LISTSERV 16.0
To unsubscribe, send a message to [log in to unmask] with following text
in
the BODY (NOT the subject field): SIGNOFF Technet
To temporarily halt or (re-start) delivery of Technet send e-mail to
[log in to unmask]: SET Technet NOMAIL or (MAIL)
To receive ONE mailing per day of all the posts: send e-mail to
[log in to unmask]: SET Technet Digest
Search the archives of previous posts at:
http://listserv.ipc.org/archives
For additional information, or contact Keach Sasamori at [log in to unmask]
or 847-615-7100 ext.2815
-----------------------------------------------------
______________________________________________________________________
This email has been scanned by the MessageLabs Email Security System.
For more information please contact helpdesk at x2960 or
[log in to unmask]
______________________________________________________________________
---------------------------------------------------
Technet Mail List provided as a service by IPC using LISTSERV 16.0
To unsubscribe, send a message to [log in to unmask] with following text
in
the BODY (NOT the subject field): SIGNOFF Technet
To temporarily halt or (re-start) delivery of Technet send e-mail to
[log in to unmask]: SET Technet NOMAIL or (MAIL)
To receive ONE mailing per day of all the posts: send e-mail to
[log in to unmask]: SET Technet Digest
Search the archives of previous posts at:
http://listserv.ipc.org/archives
For additional information, or contact Keach Sasamori at [log in to unmask]
or 847-615-7100 ext.2815
-----------------------------------------------------
This e-mail message and any attachments may contain confidential
information from Astrolab Inc. If you are not the intended recipient,
you are hereby notified that disclosure, printing, copying,
distribution, or the taking of any action in reliance on the contents of
this electronic information is strictly prohibited. If you have received
this e-mail message in error, please immediately notify the sender by
reply message and then delete the electronic message and any
attachments. Thank you for your cooperation.
______________________________________________________________________
This email has been scanned by the MessageLabs Email Security System.
For more information please contact helpdesk at x2960 or
[log in to unmask]
______________________________________________________________________
---------------------------------------------------
Technet Mail List provided as a service by IPC using LISTSERV 16.0
To unsubscribe, send a message to [log in to unmask] with following text
in
the BODY (NOT the subject field): SIGNOFF Technet
To temporarily halt or (re-start) delivery of Technet send e-mail to
[log in to unmask]: SET Technet NOMAIL or (MAIL)
To receive ONE mailing per day of all the posts: send e-mail to
[log in to unmask]: SET Technet Digest
Search the archives of previous posts at:
http://listserv.ipc.org/archives
For additional information, or contact Keach Sasamori at [log in to unmask]
or 847-615-7100 ext.2815
-----------------------------------------------------
______________________________________________________________________
This email has been scanned by the MessageLabs Email Security System.
For more information please contact helpdesk at x2960 or [log in to unmask]
______________________________________________________________________
---------------------------------------------------
Technet Mail List provided as a service by IPC using LISTSERV 16.0
To unsubscribe, send a message to [log in to unmask] with following text in
the BODY (NOT the subject field): SIGNOFF Technet
To temporarily halt or (re-start) delivery of Technet send e-mail to [log in to unmask]: SET Technet NOMAIL or (MAIL)
To receive ONE mailing per day of all the posts: send e-mail to [log in to unmask]: SET Technet Digest
Search the archives of previous posts at: http://listserv.ipc.org/archives
For additional information, or contact Keach Sasamori at [log in to unmask] or 847-615-7100 ext.2815
-----------------------------------------------------
|
