Attached files are certain company's Freeform PAL design with ray-path technology.
Lens informations are as below.
Distance: pl
Add: +2.00
Corridor Length: 15mm
As you see, cylinderical map is some difference with other company's products.
pls, let me know your opinion regarding this pal design.
Good or Bad?
Regards,
My opinion is that any plot charts are a lousy way to evaluate a progressive design.
Please supply a scale for the images and what maps are we looking at?Originally Posted by kc0724
Last edited by HarryChiling; 10-08-2010 at 12:17 PM.
I agree , they have been of little value in helping me understand how I or a pt sees through that design finished in a frame.
Oh, I think they are helpful but only when you can compare them to others. TheLensGuru is great for that, but still isn't perfect.
0.50D step sph and cyl
I had to edit post... That map looks weird lol
Oh yeah, well I think YOU'RE a lousy way to evaluate a progressive design :p.
As for the lens plots, since those are in .50 diopter steps..... that's one UGLY progressive design. Now, what progressives are we looking at?
There are rules. Knowing those are easy. There are exceptions to the rules. Knowing those are easy. Knowing when to use them is slightly less easy. There are exceptions to the exceptions. Knowing those is a little more tricky, and know when to use those is even more so. Our industry is FULL of all of the above.
Oh, I recognize it. Topographical map of New Orleans near the ninth ward, right?
lol
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