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  1. Replies
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    1 these are only products that are used to clean...

    1 these are only products that are used to clean the lenses, they have no effect on hardness, of course if you use lenses with a protective coating on cx, this will be affected and / or removed.
    2...
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    441

    sorry but I got confused, capture 2 is with the...

    sorry but I got confused, capture 2 is with the ZrO2 and capture 3 is just Cr39 + top coat
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    1496114962

    1496114962
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    441

    sorry but I did not understand, to really measure...

    sorry but I did not understand, to really measure the thickness you would have to evaporate a very high thickness (at least 1/4 lambda), if we suppose the refractive index around 1.31 means at least...
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    441

    14960

    14960
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    441

    14959

    14959
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    378

    we have used deep coating systems with tintable...

    we have used deep coating systems with tintable hard coat + primer for many years, they also work on poly but in recent years we have completely abandoned poly in favor of Trivex and 1.6 (colored and...
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    12,699

    in my continuous laboratory with the traditional...

    in my continuous laboratory with the traditional Bayer test (I am well stocked with Alundum) I would like to know the specifics of the sand used for the Essilor test
    quartz microspheres...
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    846 / 5000 Risultati della...

    846 / 5000







    Risultati della traduzioneWe produce lenses and treatments for opticians, usually supplying samples in two folders of 24 lenses for free or at a small cost.Usually a folder...
  10. Replies
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    you are right, in Italy it is very different and...

    you are right, in Italy it is very different and such an approach would not be accepted. I must deliver a PAL freeform, colored, with hard coat and AR (or mirrow or both CX mirrow and cc AR) in 3 day...
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    there are 2 commercial types of 1.67, l0MR7 which...

    there are 2 commercial types of 1.67, l0MR7 which dyes very quickly but has problems with heat (softening temperature 74 ° c-165 f °) and MR10 which has no problem and you can treat it as CR39 at 93...
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    2,066

    we use tintable HC (deeping), colored the lens,...

    we use tintable HC (deeping), colored the lens, soft cleaning by ultrasonic tanks (no color change) and AR coat, we send to customer in 2 days.
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    I'm sorry but the arrangement of an...

    I'm sorry but the arrangement of an anti-reflection process that has between 4 and 10 layers is a complex thing, firstly you need a spectrophotometer to evaluate the reflection curve and secondly a...
  14. please post a photo, the lenses with these...

    please post a photo, the lenses with these problems are only HC hardened? with what products do you raise them? is the phenomenon only concave or also convex?
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    the first step is to visually determine whether...

    the first step is to visually determine whether the gap is between HC and lens or between HC and AR.
    If HC also delaminates, try HC only lenses in boiling DI water for 15 and after 15 extra minutes....
  16. UK is no longer an EU country as of January 1st....

    UK is no longer an EU country as of January 1st. Now they cannot even be the country of entry for CE marking
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    14786

    14786
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    14785

    14785
  19. Replies
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    second...

    second
    https://www.optiboard.com/forums/image/png;base64,iVBORw0KGgoAAAANSUhEUgAAApUAAAE1CAYAAAC2pRvUAAAgAElEQVR4Ae3d7cscx7nn8f675k8I 8IEwsKKJcmb5nDWL3YNy3pfxDmSE92JziIGb2IWQRCH...
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    these are the measured transmissions of a CR39...

    these are the measured transmissions of a CR39 lens and the same lens with an AR on both faces.
    The transmission increases and a lot
    Shimtzu UV2600 spectrophotometer instrument with integrating...
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    I use a tintable HC on MR8 and MR10 with good...

    I use a tintable HC on MR8 and MR10 with good results, which HC would you like to use? you also want to use Primer (it helps a lot in the color speed )?
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    top coats based on PFA or PTFE normally resist...

    top coats based on PFA or PTFE normally resist almost all chemicals (but not wear and tear), silicone top coats have a lower seal and are removed by continuous washing with solvents
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    1474014741 The simplest methods to evaluate the...

    1474014741
    The simplest methods to evaluate the hydrophobicity of a surface are the use of particular dyes that have a specific surface tension or alternatively drop a drop (2-3 mm) of DI water and...
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    this is not the case, the molecules that give...

    this is not the case, the molecules that give polarization have the characteristic of absorbing a little light on all angles anyway. if you accept a 95% polarization on 90 ° angles, you will still...
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    AR is, as the name implies, a treatment that...

    AR is, as the name implies, a treatment that reduces the reflex but does not eliminate it.
    the fact of noticing this reflection on the lenses during a teleconference depends on the shape (curve) of...
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