Search:

You are exactly correct. However, one big problem is that many of the layers in typical AR stacks are much more precise than 10nm. For instance, Cr is typically layed on thinner than 1nm. Sio is also...

The difference is that where and when a spin coater is used [regardless of the industry it is used in] depends on the precision necessary for that specific coating. Spin coaters cannot come close to...

Seemed pretty clear to me.

You will also have color variance among different lens types in any AR system. Assuming the lab is running mixed batches of lens (ie: CR39,Poly, and high index) together, the lenses will always come...

I don't understand where people get this idea that AR makes their lenses more fragile? AR only makes any defects or dirt/oil more apparent due to the increase in transmission. If you removed the AR...

I never understood this as well. But think for a minute about the lab who invested all that money in the equipment and the people to redo that coating.

There are many coatings that don't want to strip off very easy. But if you are leaving them in the stripper (I assume hydroflouric acid), it might be damaging the hard coat as well. Better to redo a...

This is true. High vacuum PVD coaters are the best means to apply AR or any thin film. Sputter coaters can also produce very good AR and mirrors. They also add a lot of versatility (small batch...

I agree. Generally AR gets more brittle the harder and more scratch resistant it gets. There have been some major improvements to help this compromise and it certainly wasn't Hoya that pioneered...

Bill,

As a matter of fact I do understand Bayer testing very well. If you read my post, it states exactly what you did about the testing needing to be done on a CR39 lens. It's just that your...

10.93? On a 1.67 lens? This could be a little misleading. First of all, Bayer is just a ratio of before and after haze due to a measured amount of rough media being passed across the front surface...

Most people that I know who work at labs have been there a LONG time. I think it becomes more of a way of life. It also seems to take a long time to accept someone new. The optical business is like a...

Do I smell a discussion on DWDM coming? There is also a big push to be able to censor the internet. Changing protocols and rendering the old protocol useless might give them the edge they need to...

wonder why LC doesn't use Cole as its source for AR? Keep it in the Lux family. :confused:

My suggestion would be to send Larry Clarke an email. He is the CEO of satisloh North America. I'm sure he could get you pointed in the right direction. His email is on the link.

They use sputter coaters now I believe. from satisloh.

which part?

I've heard this before somewhere. Is it a southern thing for saying Rx?

The front and back AR on LC is different. The idea is that they stock front side only AR lenses. Then they can surface the lens and apply backisde AR in the store for lenses in an hour. From what I...

3 month employee:

"What do these machines do?"

http://www.satisloh.com/site/index__gast-e-2005-51-387.html

You hit the nail right on the head. There are a lot of labs that DON'T do it correctly.

Dip coat is good if you have the room in your lab and time for the curing. I agree that dip coat is the best option for AR but even it has it's drawbacks. Spin coats do a better job of covering...

That's a very valid point. More consumables to apply the front side AR, more cost to the lab. And I know what you mean about the mirrors. Not to mention the people that want double gradients which...

It's important to note that the problem is very rarely due to the AR itself. To clarify, the AR coat being applied correctly is almost a gimme. There can be problems with its application but most are...