Here is a small sample of where we've been. All Glass. Bring on the chatter.
Jamie
Here is a small sample of where we've been. All Glass. Bring on the chatter.
Jamie
Jamie, thanks for the walk down memory lane. Kurovas!! I remember those :bbg:
You don't have any SoftLite lenses around, do you?
Andrew
"One must remember that at the end of the road, there is a path" --- Fortune Cookie
Of course, who does'nt. Seriously. I do.
I had a few boxes of stuff like that- 55mm finished glass ft-25, and all sorts of other glass lenses that I sold to a guy by the pound.
DragonlensmanWV N.A.O.L.
"There is nothing patriotic about hating your government or pretending you can hate your government but love your country."
When I first started in the lab, AO and Kurova and Webster, and Xcel were the biggies. We still cut a lot of glass for the Amish/Mennonite communities here. It's getting harder and harder to find good glass.
I started a small collection of old progressives and semifinished lenses (gotta love ebay). Those pictures are pretty neat.
Over the last few years I was pulled into global packaging at Transitions. I review FDA disclaimers, trademark declarations etc. Packaging, branding, logos, etc. catch my eye now.
I noticed the term "corrective curve" printed on many of the sleeves.
It seems to be on several manufacturer's products, so I take it was not a product name.
Is "corrective curve" a particular style or design of lens or just a way of saying FSV back in the day?
Thanks for sharing the photos.
Jim
Jim Schafer
Retired From PPG Industries/
Transitions Optical, Inc.
When you win, say nothing. When you lose, say even less.
Paul Brown
The term corrective curve does have meaning. Years ago researchers/manufacturers found that certain base curves could minimize abberations/errors for a particular range of powers. This is why semi-finished lenses have differing base curves. These curves are optimized for a certain range of powers (look at a base curve selection chart). These would be "corrected curves".
So in these finished lenses pictured they have been made from a particular base curve "optimized" for that power.
Many, many, many years ago (Dr. Tillyer) created specifications for reducing lens abberations by make lenses in various base curves (roughly 19)for certain power ranges, however, the idea was correct but from a practical point of view there were so many base curves that a surfacing lab would need to carry such a large inventory of differing base curves (imagine for each add power) that is just had no market success. So, the amount of different base curves was reduced and here we are.
Years ago I went for a job with an optician who still had a stock of Crookes Alpha light blue solid tints in glass. He just couldn't bring himself to get rid of them.
Jamie, Thanks for the explanation!
regards,
Jim
Jim Schafer
Retired From PPG Industries/
Transitions Optical, Inc.
When you win, say nothing. When you lose, say even less.
Paul Brown
LOL! I bet he's still got 'em.Originally Posted by RGC_man
Don't laugh, I still have a pair or two of Therminon, a pair of AO Cruxite C Execs and a few Kryptok buttons.
I know, it's not funny. Sorry. You find this in all labs. Throw away that worthless glass so you have room for the next progressive coming out. You could put eight or ten thousand dollars worth of lenses in that drawer.
I have alot of the Coburn Rocket 65 mm PGX and a bunch of the US Lens 65 mm clear glass. And I'm constantly looking for more. With the increases in the cost of glass its worth way more today than when I bought it and we do a fair amount of glass with all the diesel mechanics and farmers we service.
You wouldn't happen to have some of that old junk laying around would you. I'd be willing to pay shipping to free up some space for you!!;)
Days where my gratitude exceed my expectations are very good days!
...and like I said, we still sell a lot of glass lenses to the Amish and Mennonites in this area. They would rather have glass because they shun all things that are modern.
Walmart Beware, we're stealing your customers by using old technology.:D :D :D
Hey Therminon lenses are a cool product. That's the funny thing about our industry we bring out the new latest and greatest and forget about some products that are actually awesome and have an incredible ability to perform.
Therminon lenses have unusual color clarity. For those who need to distinguish between colors, this old product is the berries.
I'm not in the lab anymore but I talked to a guy yesterday in Mi. I'll give him a call.
Funnyno one asked what a Kryptok button is.
I been needing some buttons for our kryps. Could you send me a few. I got a fellow here , keeps knocking them off.Funny
Speaking of tints, I happen to have an old AO tint display kit lying around; some of you "ole' timers" may remember these...
Darryl J. Meister, ABOM
Zeiss was one of the early ones...............
Zeiss Punktal
Glass Single Vision Lenses
The launch of Zeiss Punktal in 1912 dramatically improved the quality of spectacle lenses. At that time, the mathematical computation of lens design was just as unknown as high volume lens production. Punktal lenses made spectacle wearers aware for the first time how important it was to have high quality lenses for good vision.
Chris the sun must rise early in Florida. Tell me more about what you just posted. What form of ad is the Zeiss item you attached. Very cool.
Darryl -- I also have one of those AO tint displays.
It would be interesting to see some more artifacts of Optical history we all have.
Bring it on!
Jamie
Some on here ARE artifacts of optical history!
:cheers::cheers::cheers:
Thank you
;)
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