I recall watching a special feature on one of the Trek DVDs (I believe it was DS9) where they were talking and showing some glassware and they said that for some of the more unusual items, they contracted local glassware makers for small unit runs.
Probably not the best thing you wanted to hear, but it may be that these glasses were made especially for the show, and so nigh impossible to obtain.
I can't track down a brand name for them, but they sold on It's A Wrap ( http://startrekpropcollector.com/tre...item.pl?i=7932 ) so maybe if you fire off a mail in that direction, someone there might know. I'm afraid though this is just the kind of thing people don't bother to write down anywhere. Stuff even the prop department doesn't care about, or just buys in bulk, once, in case of accidents.
Thank you! These are the glasses. You've found them in a day where I've been searching fruitlessly for over a year. I've found "close", but I don't want close.
I keep getting "forbidden" from the top link and can't find any contact info from the second link, but these are the right glasses. If someone knows anything more, a contact name, seller, please post. I'll try the ST props site too and see if they know the manufacturer.