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Thread: A/R defect detection

  1. #1
    OptiBoard Professional Mike Fretto's Avatar
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    A/R defect detection

    Without trashing any one particular manufacturer we occasionally have problems with stock A/R coated lenses crazing in either the blocking, edging, or deblocking process. Usually undetectable to us at final inspection but obvious upon return by the patient. Im interested in knowing what if any inspection lights are available to help us see this problem before it leaves our lab. Were currently using 3M leap pads with a Coburn (not so) Smart Blocker and an Optronics 7EX . As mentioned earlier Im not interested in discussing the advantages or disadvantages of one manufacturers A/R over another.
    Mike

  2. #2
    OptiBoard Professional OptiBoard Silver Supporter
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    Use a 100 watt incandescent bulb with a black backround, The fractures will light up! Thin lenses, need base curve appropriate blocks, get all the support you can on the ram side, felt backing pad,
    make sure the ram pad is not hardenend with age.

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    The best inspection light is available from Bulbtronics QC X75 CE it is pricey but will allow you see any defects with no training required.

  4. #4
    Master OptiBoarder OptiBoard Silver Supporter lensmanmd's Avatar
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    DAC has an inspection box available. It will show more defects than you may care to see.
    I bend light. That is what I do.

  5. #5
    Compulsive Truthteller OptiBoard Gold Supporter Uncle Fester's Avatar
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    Quote Originally Posted by lensmanmd View Post
    DAC has an inspection box available. It will show more defects than you may care to see.
    Got a link?

  6. #6
    Master OptiBoarder OptiBoard Silver Supporter lensmanmd's Avatar
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    Quote Originally Posted by Uncle Fester View Post
    Got a link?
    http://store.dactechnologies.com/bus...box-black-each
    I bend light. That is what I do.

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    OptiBoard Novice OptiBoard Gold Supporter
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    Check out our website for information on processing AR products.
    mhopticalservices.com

  8. #8
    OptiBoard Professional Mauro.Airoldi's Avatar
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    Click image for larger version. 

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ID:	14545 the standard use in the AR production.

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