[Jewelry making - Article 00099] - Re: [Orchid] Transparent soldering pad

[Jeff Simkins]

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Candyce,

    Whenever we need to see something from the bottom to align to
    something on the top, we take advantage of a unique property of
    silicon which is the transmittance of infrared light. This would
    require a camera that is sensitive to that part of the spectrum. 

    Another method is an overlay of one image captured over the top of
    the second image. We do this upside down on a Karl Suss SB6 substrate
    bonder. 

    I don't know how expensive image capture tools are, but if you don't
    mind working from a video monitor, then it would seem reasonable. I
    know animation artists use image capture tools for line drawing
    tests, so it shouldn't be ridiculously priced like semiconductor
    fabrication tools. 

    A projector might work too. A laser vector graphic writer?(think
    laser show), whatever it would take to place the design on the work
    surface so you can set your pieces. After seeing alarm clocks that
    can project the time on the ceiling, anything seems possible. 

Kind Regards,
Jeff
Jeff Simkins
Microelectronics Engineer
University of Cincinnati
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