It seems we have a few admirers of the optical designers’ art so I thought it worth sharing this:
US patent 3925910 by Olympus does not simply reference ‘prior art’ but gives a detailed description of how the design improves upon German patent 1213140 by Leitz.
note: 1213140 is available in English as 1020030
All three documents are available on Espacenet
... Very interesting, for those who are that way inclined
MichaelG.
An interesting patent [for microscope objective]
An interesting patent [for microscope objective]
Too many 'projects'
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abednego1995
- Posts: 137
- Joined: Thu Dec 15, 2016 6:32 am
Re: An interesting patent [for microscope objective]
That's one expensive lens design...
They're using 2 fluorite elements in the first embodiment, and 3(!) in the second. If they had redesigned it in 1975 (That's when Schott came out with their first ED glass FK01), that would have made an well corrected and affordable LWD objective.
They're using 2 fluorite elements in the first embodiment, and 3(!) in the second. If they had redesigned it in 1975 (That's when Schott came out with their first ED glass FK01), that would have made an well corrected and affordable LWD objective.
Re: An interesting patent [for microscope objective]
... Yes, that’s fine, if you don’t want to use Espacenet
https://worldwide.espacenet.com/patent/search?q=3925910
MichaelG.
Too many 'projects'