Take the two parts separately. 5.00 sphere decentered in 10 mm gives you 5D BI prism. Then do the cylinder. Prism created by decentering a cylinder requires a little trig or graph paper. A -5.00...
Hi Lensman, thank you for your response. To be sure, I assumed the OptiCampus calculation was correct. In years past, I would have picked up the phone and called Darryl. :(
Before I decided to post this, I searched through the web and this site but didn't find exactly what I am looking for. I would like to know if somebody can help me with the center thickness formula...
Hey guys,
I need a replacement for the good ol' faithful takubomatic PM-7 as the mechanism has seized beyond repair. I've seen some floating around in working condition for about $30-$80, (they pop...
Take the two parts separately. 5.00 sphere...
Take the two parts separately. 5.00 sphere decentered in 10 mm gives you 5D BI prism. Then do the cylinder. Prism created by decentering a cylinder requires a little trig or graph paper. A -5.00...
Kwill212 01-16-2021, 01:18 PM