Results 1 to 11 of 11

Thread: myotor lenticular bifocal

  1. #1
    OptiBoard Apprentice
    Join Date
    Jan 2011
    Location
    scotland
    Occupation
    Optical Laboratory Technician
    Posts
    10

    myotor lenticular bifocal

    hi there im new to this site and just finding my way around so please be patient, is anyone familiar with the advantages and disadvantages of the myotor bifocal and are they available to order

  2. #2
    Master OptiBoarder
    Join Date
    Mar 2010
    Location
    north of 49
    Occupation
    Dispensing Optician
    Posts
    3,002
    Here's a job for Mike! The myotor bifocal is a plano margin lenticular myodisc bifocal(description for the younguns)........The field for distance, and near is dictated by the power of the distance and the near power, made by overlapping fields, thus creating an arc shaped junction.

    Advantages:Custom field, and edge thickness control, base curve choice.
    Disadvantages:Difficult to/custom fabrication.

    Now heeeere's MIKE AUUUURRRIIIILIOUS!

  3. #3
    ATO Member HarryChiling's Avatar
    Join Date
    Apr 2005
    Location
    Nowhereville
    Occupation
    Other Eyecare-Related Field
    Posts
    7,765
    A very complicated lens to create and forget about astigmatism it will throw off the segment area. It was fun to make one I took pictures here you go.
    Click image for larger version. 

Name:	myoter bifocal.jpg 
Views:	107 
Size:	32.0 KB 
ID:	7543
    1st* HTML5 Tracer Software
    1st Mac Compatible Tracer Software
    1st Linux Compatible Tracer Software

    *Dave at OptiVision has a web based tracer integration package that's awesome.

  4. #4
    OptiBoard Apprentice
    Join Date
    Jan 2011
    Location
    scotland
    Occupation
    Optical Laboratory Technician
    Posts
    10
    thanks... much appreciated

  5. #5
    Bad address email on file fvc2020's Avatar
    Join Date
    Feb 2004
    Location
    Forest Lake, Minnesota
    Occupation
    Dispensing Optician
    Posts
    489
    Hey is that a round seg in it?

  6. #6
    Master OptiBoarder
    Join Date
    Mar 2010
    Location
    north of 49
    Occupation
    Dispensing Optician
    Posts
    3,002
    Was that done in glass, or freeform CR39, or...., Harry? I wonder what size of field you produced that to, also?

  7. #7
    Banned
    Join Date
    Jul 2010
    Location
    St. Cloud, Minnesota
    Occupation
    Ophthalmic Technician
    Posts
    3,089
    Cool!! I'd like to see a design layout if anyone has one.

  8. #8
    Master OptiBoarder Darryl Meister's Avatar
    Join Date
    May 2000
    Location
    Kansas City, Kansas, United States
    Occupation
    Lens Manufacturer
    Posts
    3,700
    Neat, Harry.

    Using a two-part epoxy to fill in the "bowl" between each surfacing operation will result in crisp lines of demarcation. You can also offer different segment sizes by tweaking the center thickness of the cut used for the segment bowl. Regarding astigmatism, you will definitely need to grind any prescribed cylinder power on the front suface of the lens blank with any minus lenticular lens design, which makes blocking either side a chore for surfacing the other.

    Best regards,
    Darryl
    Darryl J. Meister, ABOM

  9. #9
    Master OptiBoarder Darryl Meister's Avatar
    Join Date
    May 2000
    Location
    Kansas City, Kansas, United States
    Occupation
    Lens Manufacturer
    Posts
    3,700
    Cool!! I'd like to see a design layout if anyone has one
    Mike, the "Myotor" is essentially a myo-disc bifocal lens. If you're familiar with myo-disc lenses, instead of surfacing one bowl, for the distance aperture only, you're surfacing two, for both distance and segment apertures. And, as with myo-disc lenses, you can determine your own bowl sizes, based upon the constraints of the prescription and lens blank.

    Best regards,
    Darryl
    Darryl J. Meister, ABOM

  10. #10
    Banned
    Join Date
    Jul 2010
    Location
    St. Cloud, Minnesota
    Occupation
    Ophthalmic Technician
    Posts
    3,089
    Yeah, ok, that makes sense, thanks Darryl!

    Instead of epoxy, we use fiberglass resin (without the fiber of course!) when making slab-offs, and since this is very similar to that process, I don't see why it wouldn't work.

  11. #11
    Professional Rabble-Rouser hipoptical's Avatar
    Join Date
    Nov 2004
    Location
    Texas
    Occupation
    Optical Laboratory Technician
    Posts
    499
    I have a digital lathe and make stuff like that regularly in bifocal and SV form and can slab them as well. Allows us to do things that some of you used to do regularly on old equipment, just with more options. And easier. And faster.
    As for benefits? Cosmetic mostly. Lighter weight.
    Aim at heaven and you will get earth thrown in. Aim at earth and you get neither. C.S. Lewis

    An explanation of cause is not a justification by reason. C.S. Lewis

Thread Information

Users Browsing this Thread

There are currently 1 users browsing this thread. (0 members and 1 guests)

Similar Threads

  1. myotor lenticular bifocal
    By craig77 in forum Just Conversation
    Replies: 4
    Last Post: 02-01-2011, 03:52 PM
  2. Lenticular problem?
    By westell8 in forum Ophthalmic Optics
    Replies: 3
    Last Post: 04-01-2009, 12:40 PM
  3. Aspheric Lenticular
    By Whit in forum General Optics and Eyecare Discussion Forum
    Replies: 6
    Last Post: 02-23-2007, 09:58 AM
  4. lenticular astigmatism
    By OptiStudent in forum General Optics and Eyecare Discussion Forum
    Replies: 14
    Last Post: 02-12-2007, 01:38 PM
  5. Lenticular lens
    By JBee in forum General Optics and Eyecare Discussion Forum
    Replies: 13
    Last Post: 08-03-2006, 01:10 PM

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •