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  1. Replies
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    The hydro is not a layer as compared to the Si02...

    The hydro is not a layer as compared to the Si02 layer(s). It is a "mist" that does wear off in time. Contact angle is better measurement of the hydro performance. Keep in mind, hydro can be...
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    This indicates prism thinning. Avg drop is 4,...

    This indicates prism thinning. Avg drop is 4, but I am not understanding why the BD^ is so exaggerated. Max ^ with a +2 add should be around 1.2^, even less with a "5" up fit.
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    No. The lenses need to be generated on the Orbit...

    No. The lenses need to be generated on the Orbit or similar free form generator.
  4. Thread: New 1 On Me

    by lensmanmd
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    2,051

    :bounce:

    :bounce:
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    Straight to polish. Cycle times will depend on...

    Straight to polish. Cycle times will depend on the macros and curves, but generally quicker than a toric polisher. You will need a free form generator, even if it is a standard toric surface.
  6. Thread: New 1 On Me

    by lensmanmd
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    2,051

    It’s not sex. It’s not animal care. It’s not...

    It’s not sex. It’s not animal care. It’s not gardening. It’s not COVID.
    I can only guess that it has something to do with his bucket list. Perhaps the bubble bath soap drop in Ibiza?
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    I need to ask. Is the crazing occurring in...

    I need to ask. Is the crazing occurring in coater? Plus or minus?
    I would suspect not, as it would be noticeable at AR inspection, or at first inspection. More likely a bench issue, esp.,...
  8. That’s not how the AR stack works. BS only will...

    That’s not how the AR stack works. BS only will create a near mirror effect on the front side of clear lenses, enhancing the “ghost” effect.
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    Spectrometer? Blue light meter?

    Spectrometer? Blue light meter?
  10. Replies
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    167 is prone to expansion/contraction, so heat is...

    167 is prone to expansion/contraction, so heat is the primary cause of crazing. Secondary cause is block mismatch @ bench, causing internal crazing at the edger.
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    DV 2 above datum is good NV 2 below datum is...

    DV 2 above datum is good
    NV 2 below datum is good. Consider down gaze when reading.
    ST/FT 3-5 below based on bridge style.
    PAL 2-4 above datum.
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    I would suspect prism thinning.

    I would suspect prism thinning.
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    Short answer. Many labs are switching to an...

    Short answer.
    Many labs are switching to an STP process to reduce labor costs. Much easier to automate = less staff. No one needed to pull laps, switch pads, clean and restock laps. One person...
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    SV slabs are rare. Typically for sports, think...

    SV slabs are rare. Typically for sports, think cyclists, or therapeutics.
    The prescriber, IMO, is relying on your expertise, as he/she isn’t.
    Slab value for SV is dependent not only on RX,...
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    Two words. Asian fit.

    Two words. Asian fit.
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    Possibly a 69 NPD would have worked,...

    Possibly a 69 NPD would have worked, though.......in a 80mm blank
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    Challenging is one thing. I like challenges. ...

    Challenging is one thing. I like challenges.
    Impossible is another. The RD22 was only available to us in a 65mm blank.
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    100% agreed

    100% agreed
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    This was an ABOC, WITH a lab background. Quote...

    This was an ABOC, WITH a lab background. Quote from the ABOC, “patient refuses anything smaller”. Might I add that NPD was 29.5?

    I provide training, have our reps provide training (frame and...
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    Measure twice, order once

    +9.75 RD22 in a 66ED frame. Don’t blame the lab if they reject the order.
    Call the lab first to check blank size and availability.
    And…..you originally sold this in a PAL with a +3.75 add...
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    I have to ask. Are you using a full spectrum...

    I have to ask. Are you using a full spectrum modified DSLR?
    Most astrophotographers seem to be doing this now.
    Great image, BTW.
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    We are going through something similar, except...

    We are going through something similar, except it's 11^ BO OU. This is outside of our bread and butter, so we outsourced them. We got rid of our toric surfacing line, and are now a STP/FF platfrom....
  23. Thread: New edger

    by lensmanmd
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    1,543

    Some heavy duty pantyhose to filter the rest of...

    Some heavy duty pantyhose to filter the rest of the particles is a must. I mean the reinforced, support style of pantyhose to attach at the end of the drain hose.
  24. Thread: Crizal Rock

    by lensmanmd
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    :bounce: love typos!

    :bounce:
    love typos!
  25. Thread: Crizal Rock

    by lensmanmd
    Replies
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    12,812

    Caveat-I’m no expert SiO2 is basically glass. ...

    Caveat-I’m no expert
    SiO2 is basically glass. We all know glass is more scratch resistant than plastic and acrylic.
    Low index SiO2 is more scratch resistant than hi index SiO2. Pete verified...
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