Recent content by .RC.

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    Optical Comparator LED retrofit

    Thought I might close off this thread with the outcome. After some trials and errors and blowing up an extremely expensive LED I have got the machine fixed. I am now running a CREE XHP35, which is being slightly overdriven, but it is attached to a decent fan cooled heatsink. All this is held...
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    Optical Comparator LED retrofit

    Ok the Lumileds Luxeon V is now available https://www.digikey.com/product-detail/en/lumileds/L1V1-657003V500000/1416-2011-1-ND/7563558 I seem to be having heat issues with the driver. I have the LED on a cut down old CPU heatsink, but the driver is putting out a lot of heat.
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    Optical Comparator LED retrofit

    Well I have all the bits and pieces required to test it out. Wow the SST-90 puts out some light, and a whole lot of heat as well. At 7amps which is what the driver outputs it puts out enough light, although I would not want much less. I think in hindsight the best LED to use would be one that...
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    Optical Comparator LED retrofit

    I should add that I found two other options. One being the CREE XHP35, which I believe is a single chip, but slightly larger. The other is a brand new LED that does not seem to be available yet the Lumiled Luxeon V http://www.lumileds.com/products/high-power-leds/luxeon-v but it is 4mmX4mm I...
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    Optical Comparator LED retrofit

    Yes the lamphouse is in the front of the machine. The original bulb is one of these http://www.donsbulbs.com/cgi-bin/r/b.pl/cps%7C6v%7C100w%7Cdcmr~ansi.html It sits behind a condensor lens system that projects light across the part being inspected, into another lens system that magnifies the...
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    Optical Comparator LED retrofit

    Awhile ago I picked up an old Kodak optical comparator, the main bulb (6V 100W) was blown and while still available as NOS was quite pricey. I modded and installed a 100W Halogen bulb instead. Fast forward a couple of years it would appear my retrofit was not done wisely as the first lens...
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