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The 7J20 Patent is now in the archives


 

For all of you that are interested in the 7J20, Egge Siert just uploaded the entire US patent for it. It makes for interesting reading if you are interested in electro-optics, or in learning more about this unusual plugin.

Dennis Tillman W7PF

File : /7J20 Patent #3886331.pdf
Uploaded by : calibrationfixture <eggeja2@hotmail.nl>
Description : Addition to 7J20 & J20 Photo Album


You can access this file at the URL:
https://groups.yahoo.com/neo/groups/TekScopes/files/7J20%20Patent%20%233886331.pdf
calibrationfixture <eggeja2@hotmail.nl>


Craig Sawyers <c.sawyers@...>
 

For all of you that are interested in the 7J20, Egge Siert just uploaded the entire US patent for
it. It
makes for interesting reading if you are interested in electro-optics, or in learning more about
this
unusual plugin.

Dennis Tillman W7PF
Indeed most interesting. Because the patent dropped off the perch in the early 90's the basic
principle is adopted by several manufacturers, chief of which is Ocean Optics who make them like
shelling peas. They use the same Czerny-Turner approach (Ocean's is actually a crossed Czerny Turner
for compactness), and up to date arrays from Hamamtsu. About $3k - $6k , powered from USB and
complete with spectral analysis software.

But in 1973, and typical for Tek, it was decades ahead of the curve.

Craig


Egge Siert
 

Hi to All,

Dennis Tillman provided me the pdf of the 7J20 Patent Document. This for uploading it into the 7J20 & J20 Photo Album. This didn't work, therefore it is now in the Files Section,


Greetings,


Egge Siert


Miguel Work
 

Thanks!



De: TekScopes@yahoogroups.com [mailto:TekScopes@yahoogroups.com]
Enviado el: martes, 5 de abril de 2016 1:28
Para: TekScopes@yahoogroups.com
Asunto: [TekScopes] The 7J20 Patent is now in the archives





For all of you that are interested in the 7J20, Egge Siert just uploaded the entire US patent for it. It makes for interesting reading if you are interested in electro-optics, or in learning more about this unusual plugin.

Dennis Tillman W7PF

File : /7J20 Patent #3886331.pdf
Uploaded by : calibrationfixture < <mailto:eggeja2@hotmail.nl> eggeja2@hotmail.nl>
Description : Addition to 7J20 & J20 Photo Album

You can access this file at the URL:
<https://groups.yahoo.com/neo/groups/TekScopes/files/7J20%20Patent%20%233886331.pdf>; https://groups.yahoo.com/neo/groups/TekScopes/files/7J20%20Patent%20%233886331.pdf
calibrationfixture < <mailto:eggeja2@hotmail.nl> eggeja2@hotmail.nl>