Re: [ap-ug] another good "how lenses are made"


May 10, 2007

 


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#35783 May 10, 2007

www.youtube.com/watch?v=X7_wL0ZZi6k

Mike Clemens



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#35784 May 10, 2007

In a message dated 5/10/2007 3:07:25 PM Central Daylight Time,

mike@... writes:



> www.youtube.com/watch?v=X7_wL0ZZi6k

> Mike Clemens

>



Boy, that is old technology.



Rolando





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#35786 May 10, 2007

Boy, that is old technology.





Do you think the video is old, Roland, or that they are still

using old methods?









[Non-text portions of this message have been removed]



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#35787 May 10, 2007

In a message dated 5/10/2007 3:58:53 PM Central Daylight Time,

mike@... writes:



> Do you think the video is old, Roland, or that they are still

> using old methods?

>



I knew the guys at JML Optical from when I worked at B&L. I think this video

goes back at least 30 years. My college roommate worked there for a year, and

I used to consult with him on some other stuff, so I got to see their factory

and equipment. Few optical shops survive with this kind of equipment any more,

except those making lenses for the military at inflated prices (10x to 100

times those seen in the amateur astronomy world). Most of these shops have

either closed or gone on to high end CNC equipment. There used to be a dozen or

more right here in the Chicago area, but only one or two still left, and they

have gone modern.



Rolando





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#35788 May 10, 2007

By the way, I'll be at Optifab next week to see all the latest equipment and

techniques, and to meet my suppliers and old friends from the optical world.



www.spie.org/events/ofbexhibit



Rolando





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#35789 May 10, 2007

By the way, I'll be at Optifab next week to see all the latest equipment

and > techniques, and to meet my suppliers and old friends from the optical

world. >

> www.spie.org/events/ofbexhibit

>

> Rolando



It looks like a big show. Quite a list of exhibitors, and I can see that

Rochester seems to have quite a few optics related companies. I noted a

couple from my hometown, Keene, NH, and quite a few scattered through New

England.



No chance to invest in gold, though. I wonder how those folks did at NEAF?



Clear skies, Alan


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