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  1. Replies
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    1,277

    Let me start by saying that the market where I...

    Let me start by saying that the market where I work (Europe) is 99% characterized by RX lenses without preventive treatment on CX and therefore practically all of them are HC (SRC) and around 70% AR...
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    1,891

    the temperature also depends on the type of hard...

    the temperature also depends on the type of hard coat, we use 110/115°c for at least 2 hours
  3. two considerations on Newton's rings, firstly the...

    two considerations on Newton's rings, firstly the problem of the many types of Hard coat index, consider that an average company in Europe uses at least 3 different types: HC not tintable for CR39,...
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    point 2 you have to check with MEI assistance, I...

    point 2 you have to check with MEI assistance, I remember that you could read a value somewhere.
    point 3 must still be replaced and there are at least 3/4 different types
    point 4 you also have to...
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    1,659

    I think I understand that your problem is the AR...

    I think I understand that your problem is the AR treated lenses that "move" when the tool enters for cutting.
    There can be many reasons:
    1 AR with a final layer that was too slippery - in some...
  6. Thread: Tinting

    by Mauro.Airoldi
    Replies
    9
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    1,528

    15474

    15474
  7. Thread: Tinting

    by Mauro.Airoldi
    Replies
    9
    Views
    1,528

    15473

    15473
  8. Thread: Tinting

    by Mauro.Airoldi
    Replies
    9
    Views
    1,528

    The reasons for the poor results in the...

    The reasons for the poor results in the reproduction of the required color can be two different:
    firstly do you send a sample (manufacturer reference or just a generic request for "G15"?
    secondly...
  9. Replies
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    906

    The color of the residual reflection is due to...

    The color of the residual reflection is due to various elements, the index of the lens, the refractive index of the hard coat and certainly the correct conditions of evaporation of the layers. for...
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    1,276

    The change in the color of the reflection in a...

    The change in the color of the reflection in a mirrored lens is due both to the distance and to the relative inclination of the lens itself inside the evaporation chamber. Naturally in the case of...
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    1,256

    I'm afraid this technology was a good idea but it...

    I'm afraid this technology was a good idea but it had so many problems that it was abandoned and in any case it is technology of the past millennium
  12. Replies
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    3,491

    We are an average production company, so we only...

    We are an average production company, so we only have very large and performing lights (Mei TBA), there is a smaller laboratory model that makes you work in cutter (much faster performing with...
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    1,830

    I admit that there are many differences between...

    I admit that there are many differences between the US and the Italian market but it is difficult for me to understand how it can take more than a month for an RX, we are an RX company that works...
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    4,072

    Sorry but I don't understand the meaning of the...

    Sorry but I don't understand the meaning of the question, glasses to stop X-rays... and the rest of the body?
    however very dense materials are needed, even using lead (d>11) a thickness of a few...
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    1,528

    151991520015201These are some examples of mirrors...

    151991520015201These are some examples of mirrors that we produce, the base of the lens is devoid of color and the "darkening" that can be seen is due only to the bandpass effect of the mirror.We...
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    The problem with AR produced in small RX labs is...

    The problem with AR produced in small RX labs is that they are produced together for lenses of different refractive index. the result is a different reflection for each index. In the image you can...
  17. one small problem how to put a thing that is...

    one small problem how to put a thing that is created around 3812 ° f on a plastic lens? alternatively we could make the lenses totally of this aluminum but the weight would be high (density 2.75)
  18. seen from the photos they are not cracks but...

    seen from the photos they are not cracks but scratches, given the position I would say caused by the tools you use to load the lenses (tweezers).
  19. the drying and curing temperatures depend on the...

    the drying and curing temperatures depend on the type of HC, the type of substrate, the thickness deposited and whether or not a primer is used.
    In general, my experience with colorable HC gives me...
  20. I would check the temperature of the pre-drying...

    I would check the temperature of the pre-drying ovens the lenses must not exceed 60/70 ° c
    check the thickness of the HC, for a colorable 3-4 microns
    Try treating 1.6 with HC 1.5 to see if the same...
  21. some questions: 1 Do you mean that the cracking...

    some questions:
    1 Do you mean that the cracking of 1.6 appeared during the curing of the lenses in the oven or after days?
    2 what curing times and temperatures do you use?
    3 Does the break only...
  22. there are many elements that cause stress on...

    there are many elements that cause stress on polarized lenses, certainly an incorrect fit and cut but not only. My experience is related to the construction and treatments of the RX.
    the polarized...
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    I hope I have misunderstood, you mean that if a...

    I hope I have misunderstood, you mean that if a lens is colored blue, this is a confirmation that filters the Blue? Or are you talking about the blue reflection?
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    I try to clarify the numbers a little (ok I'm...

    I try to clarify the numbers a little (ok I'm European and I don't use thumbs). in physics it is used to put the comma (or the dot) only as a function of the precision of the measurement of the...
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    ARs have been my daily bread for 30 years (of...

    ARs have been my daily bread for 30 years (of which 10 as a process engineer for the world's leading manufacturer of AR implants), let's see if I can clarify a few things:
    1 measuring the thickness...
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