ORIGINAL: okcmco
Hey big country. So it is expensive to set up the equipment but once set, it is pretty cheap to keep piling onlayers, huh? Guess the scope reps like to make it sound like it is a big deal. Anyway it sounds expensice. I know better now.
What lenses do you work with and for what applications?
And what are your thoughts on regular glass versus Extra low dispersion glass? Worth the extra money? I read that zeiss has been using ot for some time but not listing it as such
And This indexing you speak of, I read that Leupolds better scopes are index matched.
okcmco
Well, everything has an index. Index of air vs water gives you the reflection we don't want on lenses. They try to match this with coatings. Now don't get me wrong, the equipment to coat is custom engineered and built. A small operation can be 5 million just to start.
Ok, so as light at different wavelengths go thru the glass it scatters.Kinda like a flashlight shining thru the woods at night.Low dispersion basically keeps it from doing such.Every piece of glass has a zero dispersion point. Our vision is widespreatrum up to like 800nm. That zero dispersion point could be 500nm, so below that it has neg dispersion and higher it has high dispersion and all they are trying to do is make it zero dispersion across the human eyeball spectrum by changing the tilt of dispersion. Its a good thing, but has it limitations and can cause other issues like when alot of light hits, it can cause blurryness or backscattering. Our applications are for light filters, for higher wavelength lasers.