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78mm/F0.95 triplet lens -which scheme is this?
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PostPosted: Sat Feb 22, 2014 7:54 am    Post subject: 78mm/F0.95 triplet lens -which scheme is this? Reply with quote
Hello.

I've got this huge lens from projection tv. The specs are 78mm/F0.95, but since it is for projection tv, the resolution is not great and also register distance is almost non-existent. Just for curiosity, I've taked it apart and here's how its internals look:

http://www.freeimagehosting.net/newuploads/ep33c.jpg

The rear and front elements are made of plastic and have coating. Middle element is made of glass and has no coating. But, which scheme is this? the rear element is aspherical, I was not able to fully replicate it's shape, since have no tools to measure.


PostPosted: Sat Feb 22, 2014 11:31 am    Post subject: Reply with quote
Obviously an aspheric design
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