OK. I will discuss with my colleagues based on your comment. Thank you for your answer.
Type: Posts; User: Delly; Keyword(s):
OK. I will discuss with my colleagues based on your comment. Thank you for your answer.
Yes, measuring data given by calculation system has a cylinder power. Just following above instance, Measuring data is that +3.96 dpt at one meridian and +4.11 dpt at the other meridian. Then...
Standard don't talk about this thing.
What i meant was that a large prismatic lens produced a unwanted cylinder. For instance, if a lens have 8.00 prism degree and customer require +4.00 dpt, we...
What is the standard for SV lens with Prescription prism and without Cyl
You know. if a single vision lens has a large prescription prism, an unwanted cylinder will be produced absolutely. Usually, this cylinder is less than 0.25 D, maybe 0.10 to 0.20. In my opinion,...
Oh~ no one reply to me. Is anybody help me? Thank you.
Evaluate Near power or ADD power for Freeform products?
I think estimation of near power is more strict than that of ADD power. Because later one ignore cylinder tolerance and axis tolerance for near power. ADD power only indicate different mean between...
Thank you for your attachment. It is so helpful for me. Before axis error of weak cylinder power usually made me confusion. We tried to produce larger cylinder power like 30D instead of 25D to reduce...