Double Surface Design

[HarryChiling]

I haven't actually contributed anyting of significance lately so today when I was making an Rx lens for a pair I thought I would write up the design for others to use. It is a double surface desig I use for wrap frames, a secondary curve is detrmined to create a lenticular design which thins the edge out. It is a rough draft, but has come in handy. I will at some point incorporate it into a program. Enjoy.

[HarryChiling]

As I was writing up a quick excell sheet to test out, I noticed that I had my axis's mixed up on a few of the equations, I hope it didn't create a mess. Anyway sometimes I visualize things a little skewed when doing math late night, plus I am notorious for little errors, which is why I test these things in the software stages. Any way here is the new Doc and I am working on a updated doc with illustartions to shhow whats happening as well as a spreadsheet and program that will follow. I will post them all as time permits.

NEEDS MORE WORK WILL POST WHEN FINISHED

[HarryChiling]

Ok, here we go. I have finished the instructions for the design. I have a diagram that I will scan in and post tommorow. I would appreciate anyone who could comment on the design. I am planning on using it in my masters paper and would like to have some critique or even any mistakes pointed out. I have a excell sheet that would give examples, don't mind the power calculations I used thin lenses to minimize overcomplicating, in the final product thick lenses, pad compensations, and fining compensations might be included.

This design would only be the second part of my paper on: Wrap Eyewear Compensation and Production Techniques